Question

The area of circle z is 64 pi ft^2
What is the value of r?

Answer 1

To find area of a circle, one must perform the equation "pi(r)^2" we have all information but the radius which has become inclusive in the question. To draw out the radius, all you gotta do is defuse 64 into its square root-8. The radius is 8.

Answer 2

we know that

The area of the circle is equal to

`A=\pi r^(2)`

where

r is the radius of the circle

In this problem we have

`A=64\pi \ ft^(2)`

substitute in the formula and solve for r

`64\pi=\pi r^(2)`

Simplify

`64=r^(2)`

Square root both sides

`r=8\ ft`

therefore

the answer is

The value of r is
`8\ ft`