Question

Rearrange this formula Α= πr2 for the area of a circle to solve for r in-terms of A.

What is the new formula?

Answer 1

Answer: A/2pi = r

all you have to do is single out the r to get the new equation

Answer 2

sqrt( A / pi ) =r

Explanation:

Α= pi r^2

Divide each side by pi

A / pi = r^2

Take the square root of each side

sqrt( A / pi ) = sqrt(r^2)

sqrt( A / pi ) =r