Mathematics: Identify the circumference of ⊙s in which a=64π ft^2. c = 24π ft c = 32π ft c = 16π ft c = 8π ft

Identify the circumference of ⊙s in which a=64π

Ответ:

michellen2020

17.01.2022

Mathematics

$\large\boxed{C=16\pi\ ft^2}$

Step-by-step explanation:

The formula of an area of a circle:

$A_O=\pi r^2$

r - radius

We have

$A_O=64\pi\ ft^2$

Substitute:

$\pi r^2=64\pi$ divide both sides by π

$r^2=64\to r=\sqrt{64}\\\\r=8\ ft$

The formula of a circumference:

$C=2\pi r$

Substitute:

$C=2\pi(8)=16\pi\ ft$

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Ответ:

priscilalegarda

17.01.2022

Mathematics

C = 16π ft

Step-by-step explanation:

If we know the area

A = pi r^2

64 pi = pi r^2

Divide each side by pi

64 = r^2

Take the square root of each side

8 = r

The radius is 8

Now we can find the circumference

C = 2 *pi*r

C = 2*pi*8

C = 16pi

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Ответ:

NatalieKnows

19.09.2022

Mathematics

This might help explain how to do a very similar problem http://www.mathopenref.com/constbisectline.html

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Identify the circumference of ⊙s in which a=64π ft^2.

c = 24π ft
c = 32π ft
c = 16π ft
c = 8π ft

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