The probability that one card is a spade and the other is a king when two cards are drawn at random from a deck of 52 cards is 0.0196.
To calculate the probability that one card is a spade and the other is a king when two cards are drawn at random from a deck of 52 cards, we need to first determine the total number of possible outcomes, which is the number of ways to select two cards from a deck of 52. This can be calculated using the formula for combinations, which is:
nCr = n! / r!(n-r)!
where n is the total number of objects (52 cards in this case), r is the number of objects to be selected (2 cards), and ! denotes the factorial operation.
So, the total number of possible outcomes is:
52C2 = 52! / 2!(52-2)! = 1326
Next, we need to determine the number of favorable outcomes, which is the number of ways to select one spade and one king from the deck. Since there are 13 spades and 4 kings in a deck, there are 13 x 4 = 52 ways to select one spade and one king.
However, we need to divide this number by 2 to avoid double counting the two possible orders (king-spade or spade-king), which gives us 26 favorable outcomes.
P = favorable outcomes / total outcomes = 26 / 1326 = 0.0196 or about 1.96%
So, there is a very low probability of selecting one spade and one king when two cards are drawn at random from a deck of 52 cards.
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Is it always possible, no matter how the rabbit moves, and no matter what points are reported by the tracking device, for the hunter to choose her moves so that after $10^9$ rounds she can ensure that the distance between her and the rabbit is at most 100?
It is not always possible for the hunter to ensure that the distance between her and the rabbit is at most 100 after $10⁹$ rounds. The distance between the hunter and the rabbit can increase by a factor of 2 in each round, making it impossible for the hunter to catch the rabbit in some scenarios.
It is not always possible for the hunter to ensure that the distance between her and the rabbit is at most 100 after $10⁹$ rounds, regardless of how the rabbit moves or what points are reported by the tracking device. This is because the distance between the hunter and the rabbit can increase by a factor of 2 in each round, which means that after $10⁹$ rounds, the distance between them could be as much as $2⁽¹⁰⁾⁹$ times the initial distance. This value could be much larger than 100, making it impossible for the hunter to catch the rabbit. Therefore, there are scenarios in which the hunter cannot catch the rabbit within $10⁹$ rounds.
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brad was hang gliding at a constant velocity. he moved 395 meters Southeast in 31.6 seconds. what was his velocity
Answer: To calculate Brad's velocity, we can use the formula:
velocity = distance / time
where:
distance = 395 meters (the distance traveled)
time = 31.6 seconds (the time it took to travel that distance)
Plugging in the values into the formula, we get:
velocity = 395 meters / 31.6 seconds
velocity = 12.5 meters per second
So Brad's velocity was 12.5 meters per second in a southeast direction.
Step-by-step explanation:
The lengths of the three sides of a triangle (in inches) are consecutive integers. If the
perimeter is 27 inches, find the value of the shortest of the three side lengths.
The value of the shortest of the three side lengths is 3 inches.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
The lengths of the three sides of a triangle (in inches) are consecutive integers.
The three sides are x, x+1 and x+2 which are consecutive.
We know that perimeter of a triangle is the sum of the three sides of a triangle.
Add the three Consecutive sides to find the perimeter.
Perimeter of triangle=x+x+1+x+2
The perimeter of triangle is 27 inhces.
27=3x+3
Substitute 3 from both sides
24=3x
Divide by 3 on both sides
8=x
Hence, the value of the shortest of the three side lengths is 3 inches.
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Jim
3
8
Cans of food collected
Cooper
58
If the friends collected 80 cans in total, how many more cans were collected by Cooper than by Jim?
Answer: 20
Step-by-step explanation:
58-38=20
−3 + 5 + 6g = 11 − 3g
TYSM YALL
[tex] \: [/tex]
[tex]\frak{2 + 6g = 11 - 3g} [/tex][tex] \: [/tex]
[tex] \frak{6g + 3g = 11 - 2} [/tex][tex] \: [/tex]
[tex] \frak{9g = 9} [/tex][tex] \: [/tex]
[tex]\frak{ \: g = \frac{9}{9} } [/tex][tex] \: [/tex]
[tex] \frak{ \: g = \cancel\frac{9}{9} } [/tex][tex] \: [/tex]
[tex] \underline{ \boxed{\bold{ \red{\frak{g = 1}}}}}[/tex][tex] \: [/tex]
hope it helps!:)
Need this for a lesson
Answer:
median = 95
Step-by-step explanation:
the median is indicated by the line inside the box.
each interval on the number line is 5 units.
median = 75 + 4 units = 75 + 20 = 95
Alice is willing to spend $30 on a pair of jeans, and has a coupon for $10 off she found online. She selects and purchases a $35 pair of jeans, pre-discount. Jeff finds some steaks for $16 for which he would have been willing to pay $20. The butcher notices the meat is near the expiration Jeffs surplus: date and gives him an extra 75% off.
Alice paid $25 for her pair of jeans, and Jeff paid $4 for the steaks.
Let's calculate the final amount paid by Alice and Jeff for their purchases.
Alice:
Alice has a budget of $30 for a pair of jeans, and a coupon for $10 off.The price of the jeans she selects is $35 before the coupon.To find the final price she paid, we need to subtract the coupon discount from the original price of the jeans: $35 - $10 = $25.So Alice paid $25 for her pair of jeans.Jeff:
Jeff finds a pack of steaks for $16 and is willing to pay up to $20.This means he has a surplus of $20 - $16 = $4 that he is willing to spend on the steaks.The butcher notices the meat is near the expiration date and gives Jeff an extra 75% off.To calculate the discount, we first need to find 75% of the original price: 0.75 * $16 = $12.So Jeff gets a discount of $12, and the final price he paid is the original price minus the discount: $16 - $12 = $4.Therefore, Jeff paid $4 for the steaks.So, Alice paid $25 for her pair of jeans, and Jeff paid $4 for the steaks.
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State how the triangles are congruent using SSS, SAS, ASA, AAS, or
HL. If they are not congruent, type NOT.
Answer:
AAS
Step-by-step explanation:
[tex]\overline{PR} \cong \overline{PR}[/tex] by the reflexive property.
What is the area of this compound figure?
Answer:
98 km
Step-by-step explanation:
To find the area of the figure;
Total Area = Area A + Area B + Area C
Area A = 14 * 2 = 28 km2
Area B = 11 * 2 = 22 km2
Area C = 12 * 4 = 48 km2
Total Area = 98 km2
What is the approximate distance between point W (3, 6) and point Z (8, -2)?
Answer:
hope this helps!!! That’s the answer!
Step-by-step explanation:
Answer:
9.43 units.
Step-by-step explanation:
To find the distance between two points in a 2D plane, you can use the Pythagorean theorem. The formula for finding the distance between two points (x1, y1) and (x2, y2) is:
d = √((x2 - x1)^2 + (y2 - y1)^2)
Plugging in the values for W and Z:
d = √((8 - 3)^2 + (-2 - 6)^2)
d = √(5^2 + (-8)^2)
d = √(25 + 64)
d = √89
The distance between the points W and Z is approximately 9.43 units.
A water tower is 16 meters tall. Close by, there is a crane that is 24 meters tall. If the water tower's shadow is 30 meters long, how long is the crane's shadow?
The crane's shadow is 45 meters long when the crane is 24 meters tall.
What are similar triangles?Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent. Triangle resemblance is indicated here by the symbol "≅"
Let the shadow cast by the crane be x.
The triangle formed by the tower and by the crane are similar.
Using the rule of similar triangles we have:
16/24 = 30/x
16x = (30)(24)
x = 45
Hence, the crane's shadow is 45 meters long.
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Need help with geometry please help
Answer:31.42 sq.
Step-by-step explanation:
A=2πrh+2πr210.ja box contains 24 light bulbs, of which two are de- feefive. if a person selects 10 bulbs at random, without replacement, what is the probability that both defective bulbs will be selected?
Hence, the probability that both defective bulbs will be selected is 0.1630
We are given that a box containing 24 light bulbs. 2 light bulbs are defective.
Now if a person selects 10 bulbs at random, without replacement.
We are required to find the probability that both defective bulbs will be selected.
Since there are two defectives, therefore two defective can be chosen in(2,2) ways.
Also since 10 bulbs are selected, the remaining 8 bulbs can be selected in (22,8)
Also, the total number of ways 10 bulbs can be selected is:
[tex]^{22}C_8\\[/tex]
Therefore, the probability that both defective bulbs will be selected is:
[tex]=\frac{(^2c_2)(^{22}C_2)}{^{24}C_10}\\\\=1.630.[/tex]
rounded to 4 decimal places
Hence, the probability that both defective bulbs will be selected is 0.1630
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an urn contains 3 red marbles, 4 green marbles, and 5 black marbles. three marbles are drawn at random. find the probability of getting exactly one red marble or exactly one green marble and not both at the same time.
The answer is that there is no probability for this event to happen. To find the probability of getting exactly one red marble or exactly one green marble and not both at the same time, we can use the following steps:
Step 1: Find the number of ways to draw 3 marbles out of 12.
This can be found using the combination formula, which gives:
C(12,3) = 12! / (3! * 9!) = 220
Therefore, there are 220 ways to draw 3 marbles out of 12.
Step 2: Find the number of ways to draw exactly one red marble and two non-red marbles.
There are 3 red marbles, and we need to choose one, so there are C(3,1) = 3 ways to do this. There are 9 non-red marbles, and we need to choose two of them, so there are C(9,2) = 36 ways to do this. Therefore, 3 * 36 = 108 ways to draw exactly one red marble and two non-red marbles.
Step 3: Find the number of ways to draw exactly one green marble and two non-green marbles.
There are 4 green marbles, and we need to choose one, so there are C(4,1) = 4 ways to do this. There are 8 non-green marbles, and we need to choose two of them, so there are C(8,2) = 28 ways to do this. Therefore, there are 4 * 28 = 112 ways to draw exactly one green marble and two non-green marbles.
Step 4: Find the number of ways to draw exactly one red marble and one green marble. There are 3 red marbles and 4 green marbles, and we need to choose one of each, so there are 3 * 4 = 12 ways to do this.
Step 5: Add the results from steps 2, 3, and 4 to get the number of ways to draw marbles that satisfy the given condition.
Total number of ways = 108 + 112 + 12 = 232
Step 6: Find the probability of getting exactly one red marble or one green marble but not both at the same time.
The probability of an event is the number of ways that event can happen divided by the total number of possible outcomes. Therefore, the probability of getting exactly one red marble or exactly one green marble and not both at the same time is:
P = (number of ways to draw marbles that satisfy the given condition) / (total number of ways to draw 3 marbles out of 12 marbles)
P = 232 / 220
P = 1.0545
However, probabilities cannot be greater than 1. Therefore, the answer is that there is no probability for this event to happen.
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Start with the equation −5=x. Do the same thing to each side at least three times to create an equation that has the same solution as the starting equation.
Greta has two pet lizards, Draco and Lizzy. For every 11 crickets Greta feeds Draco, she always feeds Lizzy 8 crickets. Last week, Greta fed Draco 77 crickets.
The number of crickets Great fed last week to Lizzy is 56.
What are proportions?Proportion, in general, is referred to as a part, share, or number considered in comparative relation to a whole. Proportion definition says that when two ratios are equivalent, they are in proportion. It is an equation or statement used to depict that two ratios or fractions are equal.
Given that, For every 11 crickets Greta feeds Draco, she always feeds Lizzy 8 crickets.
Last week, Greta fed Draco 77 crickets.
Let the number of crickets Great fed last week be x.
Now, 11:8::77:x
11x=77×8
x=7×8
x=56
Therefore, the number of crickets Great fed last week to Lizzy is 56.
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"Your question is incomplete, probably the complete question/missing part is:"
Greta has two pet lizards, Draco and Lizzy. For every 11 crickets Greta feeds Draco, she always feeds Lizzy 8 crickets. Last week, Greta fed Draco 77 crickets. How many crickets did Greta feed Lizzy?
what is the rate constant at 42.4 ∘c based on the data collected for trial e?
The rate constant at 42.4 based on trial E is Value[k = 2.68 X 10^-3] and Units[M-1 s-1]
The rate constant at 42.4 0C is [acetone] initial = 0.2 M, [H+] initial = 0.01 M, so rate= k [acetone] [H+] 5.37 X 10^-6 = k X 0.2 X 0.01, k = 2.68 X 10^-3 , and the order of the reaction is two therefore the unit of the speed constant is M-1 s-1. reaction rate constants and rate laws is a fundamental concept in chemical kinetics, which is the study of the rates and mechanisms of chemical reactions. Reaction rate constants are specific to a particular reaction and are influenced by several factors, including temperature, concentration of reactants and products, the presence of a catalyst, and the activation energy of the reaction. The rate constant is related to the activation energy through the Arrhenius equation, which is given by k = A * exp(-Ea/RT), where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the absolute temperature. The rate law of a chemical reaction describes the mathematical relationship between the rate of the reaction and the concentrations of the reactants. It is determined experimentally by measuring the initial rate of the reaction under different concentrations of the reactants. The rate law is typically expressed as Rate = k[A]^m[B]^n, where k is the rate constant, A and B are the concentrations of reactants, and m and n are the orders of the reaction with respect to A and B, respectively.
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( Which of these shapes have the same area?
A
B and C
A and C
A and B
The shapes with the same areas are (c) A and B
How to determine the shapesThe complete question is added as an attachment
From the question, we have the following parameters that can be used in our computation:
Figures A, B and C
For the figures A, B and C to have the same area, the number of boxes on the shapes must be the same
Using the above as a guide, we have the following:
Figure A = 16 square unitsFigure B = 16 square unitsFigure C = 25 square unitsBy comparison, we have
A and B = 16 square units
Hence, the shapes A and B have the same area
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hized, accurate, and has a circled answer.
Problem #6 Kiran walks up to a tank of water that can hold up to 15 gallons. When it is active, a drain
empties water from the tank at a constant rate. When Kiran first sees the tank, it contains 12 gallons
of water. Four minutes later, the tank contains 10 gallons of water.
a.
b.
C.
At what rate is the amount of water in the tank changing? Use a signed number (positive or
negative) in your answer.
How many more minutes will it take for the tank to drain completely?
How many minutes before Kiran arrived was the water tank completely full?
(a) The rate at which the amount of water is changing is -1/2.
(b) It will take 20 more minutes to drain the water completely.
(c) The tank was completely full 3 minutes before Kiran arrive.
What is Unit Rate?Unit rate is the amount of one quantity for a unit amount of the other quantity.
(a) Given that,
When Kiran first sees the tank, it contains 12 gallons of water. Four minutes later, the tank contains 10 gallons of water.
Rate at which the amount of water is changing = (10 - 12) / 4 = -2/4 = -1/2 gallons per minute.
(b) Time taken to drain 1/2 gallon = 1 minute
There are 10 gallons of water remaining in the tank.
Time taken to drain 10 gallons of water = (1 ÷ 1/2) × 10 = 20 minutes
It will take 20 more minutes to drain the water completely.
(c) When Kiran arrived, water tank has 12 gallons of water.
Total amount of water in the tank is 15 gallons.
Tank has lost 3 gallons of water before Kiran arrived.
Time taken to drain 3 gallons = (1 ÷ 1/2) × 3 = 6 minutes
So the tank was completely full 3 minutes before Kiran arrive.
Hence the rate is -1/2 gallons per minute.
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Which model shows two equal expression when the value of x 2
The model that represents the two equal expression for the value x is 2 is given by :
option C. x 1 1 = 1 1 1 1
The correct model which represents the expression for the value x as 2 is given by :
A. x x x x = 1 1 1 1
On the left hand side substitute the value of x = 2 we get,
Left hand side
= 2 2 2 2
It is not equal to 1 1 1 1
Incorrect option.
B. x x x x = 1
On the left hand side substitute the value of x = 2 we get,
2 2 2 2
which is not equal to 1
Incorrect option.
C. x 1 1 = 1 1 1 1
On the left hand side substitute the value of x = 2 we get,
2 1 1
= 1 1 1 1
= Right hand side.
Correct option.
D. x x
On the left hand side substitute the value of x = 2 we get,
= 2 2
which is not equal to right hand side
Incorrect option.
Therefore, the correct model which represents the expression for the value of x = 2 is equal to option C. x 1 1 = 1 1 1 1 .
The above question is incomplete , the complete question is:
Which model shows two equal expression when the value of x is 2 ?
Attached model.
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The degree of the term with the greatest degree is called?
The degree of the term with the greatest degree is called the degree of the polynomial.
Here, it is necessary to remember that, by the definition, we can find the "Degree of a polynomial" by identifying the greatest degree of its terms.
The "Leading term" of a polynomial is defined mostly as the term with the highest power of the variable of the polynomial.
The numbers located in front to the variable (those numbers that multiply the variable) are called "Coefficients". The coefficient of the Leading term is known as the "Leading coefficient."
For example, given the following polynomial:
18x² + 2x - 6
You can identify that, in this case:
degree of the polynomial: 2
leading term: 18x²
leading coefficient: 18
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What expression is equivalent to 24a+(-26b)-13a+12b?
The expression 24a+(-26b)-13a+12b is equivalent to 11a-14b.
What is algebraic expression ?
An algebraic expression is a combination of variables, numbers, and mathematical operations, such as addition, subtraction, multiplication, and division. It can be used to represent a mathematical relationship or formula and can be simplified or evaluated using algebraic rules.
Examples of algebraic expressions include "3x + 4y", "2a^2 - 5b", and "(x + 3)(x - 2)".
Given expression ,
24a+(-26b)-13a+12b
= 24a - 13a +12 b - 26b
= 11a - 14b
Therefore, The expression 24a+(-26b)-13a+12b is equivalent to 11a-14b.
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The best fit line is given by the equation y = 0.467x + 0.417 where y represents the distance in miles, and x represents the time for the trip in minutes. Use the best fit line to estimate the time for a trip that is 6 miles long. Show your reasoning.
Answer:
12 minutes
Step-by-step explanation:
To estimate the time for a trip that is 6 miles long, we need to solve for x in the equation y = 0.467x + 0.417, where y represents the distance in miles.
First, we substitute the value of y, which is 6:
6 = 0.467x + 0.417
Next, we subtract 0.417 from both sides:
5.583 = 0.467x
Finally, we divide both sides by 0.467:
x = 12
So, the estimated time for a trip that is 6 miles long is 12 minutes.
The length of a rectangle is shown below:
On a coordinate grid from negative 6 to positive 6 on the x-axis and on the y-axis, two points A and B are shown. The point A is on ordered pair 1, 2, and the point B is on ordered pair negative 2, 2. A straight line joins the points A and B.
If the area of the rectangle to be drawn is 12 square units, where should points C and D be located, if they lie vertically below the line that connects B and A, to make this rectangle? (5 points)
C(−2, −1), D(1, −1)
C(−2, −4), D(1, −4)
C(−2, −2), D(1, −2)
C(−2, −5), D(1, −5
I NEEP HELP WITH THIS ONE LISTED BELOW:A solid is composed of squares and equilateral triangles. Its net is shown below:
A triangular prism and its net are shown. The net is three squares with side length 4 units. Attached above and below the middle square are equal sized triangles.
The area of each triangle is 7 square units. The surface area of the triangular prism is
square units. (Input whole number only.) (5 points)
PLEASE
The surface area of the triangular prism is 62 square units.
What is surface area?The area is the area occupied by a two-dimensional flat surface. It has a square unit of measurement. The surface area of a three-dimensional object is the space taken up by its outer surface.
For each three-dimensional geometrical shape, surface area and volume are determined. The area or region that an object's surface occupies is known as its surface area. Volume, on the other hand, refers to how much room an object has.
The side length of each of the three squares is 4 units.
The area of each would be:
4² = 16 sq. units.
For the three squares we have:
16(3) = 48 sq. units.
The area of each triangle is 7 sq. units.
This means together the area of the two triangles is 2(7) = 14 sq. units.
The surface area of the prism is:
14 + 48 = 62 sq. units.
Hence, the surface area of the triangular prism is 62 square units.
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The science club and the math club each bought plain pizzas for their end of the year
parties from the same pizza parlor.
The science club paid $79.00 for 5 large pizzas and 2 medium pizzas.
The math club paid $86.00 for 4 large pizzas and 4 medium pizzas.
What is the price, in dollars, of a medium pizza? Enter your answer as $0.00
The price of medium pizza paid by both the science and maths clubs found using linear equations is $9.50.
What is meant by equation?
A formula known as an equation uses the equals sign (=) to express how two expressions are equal.
Given,
Cost of 5 large pizzas and 2 medium pizzas paid by the science club = $79.00
Cost of 4 large pizzas and 4 medium pizzas paid by the math club = $86.00
Let the cost of medium pizza = x
Cost of large pizza = y
Now using the above equation we can write two linear equations.
2x + 5y = 79
4x + 4y = 86
Solving the above system of linear equations.
We are making the coefficient of the x variable the same.
Multiplying the first equation by 2.
4x + 10y = 158
4x + 4y = 86
Subtracting the equations.
6y = 72
y = 12
Now substituting in any one equation, we get the value of x.
2x + 5 * 12 = 79
2x = 19
x = 9.5
Therefore the price of medium pizza found using linear equations is $9.50.
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There are 2.75 ounces of cream cheese in one slice of cheesecake. How
many ounces are there in a cake with 8 slices?
A. 22 ounces
B. 21.6 ounces
C. 16 ounces
D. 10.75 ounces
Answer:
Step-by-step explanation:
2.75 x 8 = 22
Hi can someone please help this is due tonight.
a. It is not specified in the given information what the total number of seniors at Lewis High is, so it is not possible to directly compare the number of seniors who apply for college to the number of seniors at Lewis High.
How to explain the informationb. The same issue applies to this question as well. It is not specified what the total number of seniors at Lewis High is, so it is not possible to directly compare the number of seniors who apply for college with those who don't.
c. If two out of every three seniors at Lewis High apply for college, then one out of every three seniors does not. Therefore, the fraction of graduating seniors at Lewis High who do not apply to college is 1/3.
d. If three out of every five seniors at Lewis High who apply for college are female students, then two out of every five are male students. Therefore, the fraction of seniors who are males who apply for college is 2/5. Again, without knowing the total number of graduating seniors at Lewis High, it is not possible to directly compare the number of males who apply for college with the number of graduating seniors.
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Two of every 3 seniors at Lewis High apply for college. Three of every 5 seniors at Lewis High who apply for college are female students.yout
a. How does the number of seniors who apply for college compare to the number of seniors at Lewis High?
b. How does the number of seniors who apply for college compare to those who don't?
c. What fraction of the graduating seniors at Lewis High do not apply to college?
d. What fraction of the seniors are males who apply for college? How does the number of males who apply for college compare with the number of graduating seniors?
If the rate 1/2 ounce for 2 cups how much is it for 12 cups
PLEASE GIVE BRAINLIEST
thank you and have a good day :)
Answer:
3 ounces per 12 cups
Step-by-step explanation:
you multiply the left side by 6 on both numerator and denominator
1/2 per 2 = X per 12
1/2 * 6 = 6/2 or 3
2 * 6 = 12
3 per 12 = x per 12
the rate is 3 ounces per 12 cups
i hope this helps
Which graph represents a linear function
Answer:
Any line except a vertical line represents a linear function.
Step-by-step explanation:
Any "diagonal" line is a linear function. Even a horizontal line represents a linear function. Only a vertical line does NOT represent a linear function.
a spherical balloon is being inflated at 3 cubic meters per second. how fast is the surface area changing in square meters per second when the volume is 36 cubic meters?
The surface area is changing at a rate of approximately 2.94 square meters per second when the volume is 36 cubic meters and the balloon is being inflated at 3 cubic meters per second.
Volume of a sphere in terms of its radius = V = (4/3)π[tex]r^3\\[/tex] .......(1)
Differentiating on both sides, [tex]\frac{dV}{dt}[/tex] = 4π[tex]r^{2}[/tex][tex]\frac{dr}{dt}[/tex] .......(2)
r = radius of the sphere.
Spherical balloon is being inflated at a rate of 3 cubic meters per second.
[tex]\frac{dV}{dt}[/tex] = 3 [tex]m^3/sec[/tex]
Volume is 36 cubic meters.
V = 36 [tex]m^3[/tex]
From equation (1), [tex]r^3[/tex] = [tex]\frac{3V}{4\pi }[/tex]
[tex]r^3[/tex] = [tex]\frac{3*36}{4*\pi }[/tex]
[tex]r^3\\[/tex] = [tex]8.59^1^/^3[/tex]
r = 2.04 meters
Substituting this in equation (2), [tex]\frac{dr}{dt}[/tex] = [tex]\frac{dV}{dt}[/tex] / 4π[tex]r^{2}[/tex]
[tex]\frac{dr}{dt}[/tex] = 3/(4π[tex]2.04^{2}[/tex])
[tex]\frac{dr}{dt}[/tex] = 0.05737 m/sec
Now, surface area of sphere = A = 4π[tex]r^{2}[/tex]
Differentiating on both sides,
Rate of change of surface area [tex]\frac{dA}{dt}[/tex] = [tex]8\pi r\frac{dr}{dt}[/tex]
= 8* 3.14* 2.04* 0.05737
= 2.94 [tex]m^2/sec\\[/tex]
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