Question

given a = πr2s 360 , solve for s.

Answer 1

If you would like to solve a = πr^2s + 360 for s, you can do this using the following steps:

a = πr^2s + 360
a - 360 = πr^2s
s = (a - 360) / (πr^2)

The correct result would be s = (a - 360) / (πr^2).

Answer 2

$\sf a=\pi r^2s\times360\\Divide\ by\ \pi r^2\times360\\ \frac{a}{\pi r^2\times360}= \frac{\pi r^2s\times360}{\pi r^2\times360}\\ \frac{a}{\pi r^2\times360}=s\\\\{\boxed{\sf s=\frac{a}{\pi r^2\times360}}$