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alex41 [277]
3 years ago
7

A circle has an area of 324 pi feet squared. what is the circumference?

Mathematics
2 answers:
Free_Kalibri [48]3 years ago
8 0
The area of a circle is pi*r^2 so 324/pi is 103 if you take the square root of that it is 10.15. so you would use the circumference formula now, which is 2 pi r so 2*pi*10.15= 63.77
ZanzabumX [31]3 years ago
8 0

Answer:          

Circumference of circle is 36π feet.

Step-by-step explanation:

Given : area of circle is 324π feet²

We have to find the circumference of the given circle.

Consider Area of circle is 324π feet²

We know, Area of circle = \pi r^2

Thus, 324\pi=\pi r^2

Simplify for  r , we have,

324=r^2

Taking square root both side, we have,

r=\sqrt{324}=18

Circumference of circle is given by 2\pi r

Substitute, we get,

C=2\pi r

C=2\pi (18)=36\pi

Thus, Circumference of circle is 36π feet.

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