Question

If The area of the circle is 64 to the power of 2 pi what is the circumference

Answer 1

C=401.92

Explanation:

the equation for area of a circle is A=r^2 pi so if the area of this circle is A=64^2 pi, then we can see that 64 is the radius of the circle.

(A=r^2 pi

A=64^2 pi so r=64)

So if the radius is 64, then the diameter is (because diameter is double the radius) Then we use the newfound diameter and plug into the equation for Circumference of a circle which is

C=d pi

C=128 (3.14)

so C=401.92

Hope this helps! :)