which of the following statements is false about the area of a circle

Which Of The Following Statements Is False About The Area Of A Circle

Answers

Answer 1

Answer:

Step-by-step explanation:

All are true except for the second.  Only the second is false.

(pi)(d) is the circumference (not the area) of a circle.

Answer 2

The incorrect statement is [tex]A = \pi d[/tex].

The correct option is 2.

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. Square units are used to measure it as well. The region that includes the base(s) and the curved portion is referred to as the total surface area. It is the overall area that the object's surface occupies. The total area of a form with a curved base and surface is equal to the sum of the two areas.

As per the given data:

We have to find out the incorrect statements out of the given options about the area of a circle.

[tex]A = \pi r^2[/tex]

This statement is correct, as the area of a circle is pi times square of the radius.

[tex]A = \pi d[/tex]

This statement is incorrect, as the area of a circle is given by:

[tex]A = \pi r^2 =\frac{ \pi d^2}{4}[/tex]

The area of a circle determines how much space is covered by the circle.

This statement is correct.

The area of a circle describes the number of square units that fit inside the circle.

This statement is correct.

Hence, the incorrect statement is [tex]A = \pi d[/tex].

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Related Questions

PLEASE HELP ASAP:


1) What is the measure of ⦣4?

2) How many degrees are in a triangle?

3) What is the measure of ⦣8?

4) What is the measure of ⦣5?

5) If the measure of ⦣9 = 9x + 27, what is the value of x?

6) What is the measure of ⦣1?

7) Supplementary angles will add up to...

8) What is the measure of ⦣3?

9) What is the measure of ⦣6?

10) What is the measure of ⦣2?

11) If you add together the degrees from ⦣1 and ⦣2, they will equal..

Answers

Answer:

1. <4=115 degrees

2. 180 degrees

4. 5 degrees

6. 110 degrees

7. 180 degrees

8.65 degrees

Step-by-step explanation:

I WILL GIVE BRAINLIEST! I NEED IT ASAP!!!
Which lateral face has the largest area, the bottom one, left one, or diagonal one? What is its area?

Answers

Answer:

LSA of a cube = 100 in²

Explanation:

Let the area of the cube be a.

Given the following data;

a = 5 in²

To find the lateral surface area;

We know that a cube has four faces and as such the lateral surface area would be the area of the four faces.

Lateral surface area (LSA) of a cube = 4a²

Substituting into the equation, we have;

LSA of a cube = 4*5²

LSA of a cube = 4*25

LSA of a cube = 100 in²

Therefore, the lateral surface area of the package is 100 square inches.

THe Left one

The bottom and the left lateral face have the largest area.

The area of the prism is 96 cm³.

What is a prism?

A prism is a three-dimensional object.

There are triangular prism and rectangular prism.

We have,

The bottom one:

Lateral area.

= 12 x 4

= 48 cm²

The left one:

Lateral area.

= 12 x 4

= 48 cm²

The diagonal one:

Lateral area.

= 1/2 x 4 x 4

= 8 cm²

Now,

Area.

= ( 1/2 x 4 x 4 ) x 12

= 8 x 12

= 96 cm³

Thus,

The bottom and the left lateral face have the largest area.

The area of the prism is 96 cm³.

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a CD cost $15.50 before tax. What is the total cost after a 6% sales tax is added? ​

Answers

Answer:

16.43

Step-by-step explanation:

gib brainlest or else:0

Nika bought a set of 12 rubber ducks for $72.



What is the cost of 1 rubber duck?

Answers

Each one will cost $6.00 because $72/12=6.00

Help me please ASAP. I really need this

Answers

Answer:

Step-by-step explanation:

I don't think this can be done without the diagram. You do not know what HD is opposite. I will take a guess that it is opposite TU which makes TU = 220 because both H and D are midpoints and that makes TU twice as large as HD.

If this is incorrect, post the diagram.

WILL GIVE BRAINIEST!!!!!!!!

Answers

The answer is A. Hope this helps!

Answer:

y = -5/2x +4

Step-by-step explanation:

First, make the equation into standard form.

5x + 2y = -10

2y = -5x - 10

y = -2.5x - 5

In order for two lines to be parallel, they must have the same slope. (In y = mx + b, "m" is the slope)

The slope in y = -2.5x - 5 is -2.5, so we need to find an equation with a slope of -2.5 (or -5/2)

In y = -2/5x - 8, the slope is -2/5

In y = 2/5x + 7, the slope is 2/5

In y = 5/2x - 6, the slope is 5/2

In y = -5/2x +4, the slope is -5/2.  

Thus, y = -5/2x +4 is the right answer

Rewrite the following expression using the GCF and Distributive Property.
20k + 4m

Answers

tdtdidtiddititidtidutdtudutdrysrys6rdr6druurddut

the answer is 4( 5k +m)

A small black cloth bag holds two red counters, two green counters, two
blue counters, and two black counters. All are the same size. Without
looking into the bag, what is the probability of drawing a red counter then
a black counter from the bag without replacement? *

Answers

Answer:

1/14

Step-by-step explanation:

P(red, then black) = [tex]\frac{2}{8}[/tex] · [tex]\frac{2}{7}[/tex] = [tex]\frac{4}{56}[/tex] = [tex]\frac{1}{14}[/tex] (simplifed form)

7-7/5x=12

Solve for x

Answers

Answer:

x= -7/25

Step-by-step explanation:

Answer:

x = -25/7

Step-by-step explanation:

If a shirt costs 45 dollars, it's marked down to 30% off, what is the amount of the discount?

Answers

Answer:

$31.50

Step-by-step explanation:

30% of 45 is 13.5

45-13.5=31.5

(Please help!!)

The length (l) of a tet angular box is 5 centimeters more than twice its width (w).

Write an equation to represent the length of the rectangular box.

Answers

L=5+2w would be the best answer

Joe and Brody order some food for their families. Joe orders 2 chicken dinners and 3 sides for $34.50. Brody
orders 3 chicken dinners and 2 sides for $43.00. All the dinners cost the same, and all the sides cost the same.
What is the cost of 1 side?

A $2.75
B. $3.00
C. $3.25
D. $3.50

Answers

Answer: D

Step-by-step explanation:

If Joe orders 2 chicken dinners and 3 sides for $34.50, then you have to multiply 3.50 by 3 to get the ammount that the dinners cost.

3.50x3 = 10.50

Next, you have to subtract 10.50 from 34.50 to get the cost of just the 2 dinners.

34.50 - 10.50 = 24.00

Now, divide 24 by 2 to get the cost for 1 dinner.

24/2 = 12

Since Brody ordered 2 sides, you have to subtract 3.50x2 = 7 from 43 to get the total of his dinners.

43 - 7 = 36.

Now we can check our answer. Since 1 dinner costs $12, we can multiply 12 by 3 to get 36, which is the exact same number as the one we just figured out. So, each side costs 3.50.

(You can also multiply 12 by 3.50 to get 43, which was the total cost of Brody's order.)

Can someone help me find SP

Answers

SP = 24

PQ/PT = PR/PS
7/14 = 12/x
1/2 = 12/x
x = 24

1) A city has a population of 21,517 based on a census taken in 1998. If the
population is expected to grow by 11% annually, what will the population
be in the year 2030? *
A None of these
B 606,900
C 492,573
D 517

Answers

Answer:

B, 606,900

Step-by-step explanation:

First you'll need to calculate the percentage growth after 32(2030 - 1998) years. to do this you'll need to find 1.11^32 or 28.205, 1.11 being the percentage growth per year and 32 being the number of years passed. then 21,517*28.205 = 606,899.8 which can be rounded to 606,900.

5470
Machine A and machine B both make car parts.
Machine A makes 7 parts every 10 minutes.
Machine B makes 16 parts every 15 minutes.
On Monday
machine A makes parts for 12 hours
machine B makes parts for 10 hours
Work out the total number of parts made by the two machines on Monday.

Answers

Answer:  1144

Step-by-step explanation:

Given: Machine A makes 7 parts every 10 minutes.

i.e. it makes [tex]\dfrac{7}{10}[/tex] parts in 1 minute.

Machine B makes 16 parts every 15 minutes.

i.e. it makes [tex]\dfrac{16}{15}[/tex] parts in 1 minute.

On Monday,

machine A makes parts for 12 hours(720 minutes).    [1 hour = 60  minutes, 12 hours = 12 x 6 = 720 minutes]

i.e. Total parts made = [tex]\dfrac{7}{10}\times720[/tex]

i.e. Total parts made = 504

machine B makes parts for 10 hours(=60x 10=600 minutes)

i.e. Total parts made = [tex]\dfrac{16}{15}\times600[/tex]

i.e. Total parts made = 640

Total parts made by both machines = 504+640 =1144

Hence, the total number of parts made by the two machines on Monday=1144.

What is the value of p(b-c) when b=3,c=3 and p=-2

Answers

Answer:

0

Step-by-step explanation:

-2 (3 - 3)

distribute: -6 + 6

add: -6 + 6 = 0

Answer:

0

Step-by-step explanation:

p=-2,b=3,c=3

p(b-c)

-2(3-3)

-2(0)

0

or-2(3-3)

-6+6

0

hope it's helpful ❤❤❤❤

THANK YOU.

#

which value of x makes the inequality 3x+3>15

Answers

Answer:

x>4

Step-by-step explanation:

3x+3>15

3x>15-3

3x>12

x>12/3

x>4

Help me please I need this answer ASAP

Answers

Answer:

ok

Step-by-step explanation:

Solve the system of equations.
52 – 4y = -10
=
y =

Answers

i think it’s y = 31/2


Choose all of the expressions that are equivalent to 1/4 + 7/8. A. 2/8+7/8 B. 4/16+15/16 C. 8/24+21/24 D. 7/32+28/32 E. 10/40+35/40

Answers

E is correct

1 10
_ X10 = __

4 40


7 35
_ X5 = __

8 40

Answer:

A & E are correct. I have the same question as you.

Step-by-step explanation:

Just trust me its a and e

8. A blank graph has been provided.

{(-2,-2),(-1,-1),(0,0), (1, 1), (2, 2)}

{(-6,2), (-5, 1), (-4,0), (3, 1), (2, 2)}

{(-2,9),(0,1), (1,0), (3, 4), (4,9)}

{(-1,0), (0, 1), (0, -1),(3, 2), (3,-2)}

1000R
10

Answers

Answer: number 1

Step-by-step explanation:

its most likley the first one its a straight line on the graph

like if this helped

Write the equation for the inverse of the function.
y= Arctan (x+Pie/2)

Answers

Answer:

y = tan x - pi/2

Step-by-step explanation:

y = arctan(x+pi/2) use that tan y = x is y= arctan x

tan y = x+pi/2; change x with y and find y

tan x= y +pi/2; subtract pi/2 from both sides

-pi/2 + tan x = y

y= tan x -(pi/2) is the inverse function

you can also write it as

y = 1/2(2 tan x -pi)

y = tan x - pi/2

Write an equation in point slope form that passes through the given point and has the given slope.

Point = (-2, 5)

Slope = 4

Answers

y+2=4(x-5) pretty sure

The population of a city can be modeled by the expression p(1.06)^t where t represents the number of years since 1990 and p represents the population in 1990. which statement is correct?

A. the year growth rate of the population is 0.06%
B. the yearly growth rate of the population is 0.6%
C. the yearly growth rate of the population is 1.06%
D. the yearly growth rate of the population is 6%

please respond if you actually know the answer :)

Answers

Answer:

D

Step-by-step explanation:

.06 =6%

The expression p(1.06)^t represents D. the yearly growth rate of the population is 6%

What is the population growth rate?

The country's yearly average rate of change in population size over a certain time period. It expresses the proportion, growth in population size, and the total population for that year.

Given, The population of a city can be modeled by the expression

[tex]p(1.06)^t[/tex] where t represents the number of years.

This describes the yearly growth rate of the population is 6%.

If in the previous year the population was 100 this year it'll be 106 and next year it'll be 106% of 106 which is 112.36.

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X+5y=5
What is the slope intercept form of the equation

Answers

in slope intercept form it’s y = 1/5 x - 1

Answer:

y= 1- 1/5x

Step-by-step explanation:

x+5y=5

-x. -x

-------------

5y = 5-x

÷5. ÷5

-------------

y= 1 - 1/5x

Happy Paws charges $19.00 plus $4.50 per hour to keep a dog during the day. Woof Watchers charges $8.00 plus $5.75 per hour. Complete the equation and solve it to find for how many hours the total cost of the services is equal. Use the variable to represent the number of hours.

Answers

Answer:

8.8 hours

Step-by-step explanation:

Happy Paws    y=4.5x+19

Woof Watchers    y=5.75x+8

4.5(8.8)+19

$58.6

5.75(8.8)+8

$58.6

The perimeter cf a rectangle i: 56 inches" the ratio of the length of the width is 6 : 1. Find the length and the width.

Answers

Answer: Length = 24; width =4

Step-by-step explanation

Since the ratio of the length to width is 6:1

Let the length  be represented as  6x

And the width be  = x

Such that that the Perimeter of the rectangle which is  

Perimeter = 2(length + width)  becomes

56 = 2(6x + x)

56/2 = 6x+x

28 = 7x

x = 4

Width = 4

Length = 6x= 6 x 4 = 24


Please answer both

Answers

Answer:

9) 5/10

10) 4/5

Step-by-step explanation:

A terminating decimal is a decimal that stops eventually

2/3 = 0.6666666...

5/6 = 0.833333...

5/10 = 0.5

6/9 = 0.6666666...

5/10 has a result of a terminating decimal

8/9 = 0.888888...

1/7 = 0.142857...

4/5 = 0.8

4/11 = 0.36363636....

A triangle has side lengths of 16 cm and 6 cm. Which could be the value of the third side, 23 cm or 20 cm? The value (select) cm is the value of the third side.

Answers

Answer:

15 cm

Step-by-step explanation:

30 Points Plss HELP!!! Due Today

The dimensions of a triangular prism are shown.
What is the surface area of the triangular prism?


A.20.5 square inches

B.29 square inches

C.32 square inches

D.14.5 square inches

Answers

Answer:

C

Step-by-step explanation:

To find surface area you find all the areas of the sides and add them up. We can start by setting up our equations.

A = L x W

For both the sides ——> 2(5 x 0.5) = 5

For both the triangle parts ——> bh/2 ———> (4 x 6)/2 times 2 = 24

For the bottom part ——> 6 x 0.5 = 3

Now to add everything up: 24 + 3 + 5 = 32

The answer should be C.
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