Question

he formula for the surface area of a sphere is A = 4πr2. Which equation correctly solves the equation for r? A) r = 4πA B) r = A 4π C) r = A 4π D) r = A 4π

Answer 1

A = 4$\pi r^{2}$
$\frac{A}{4 \pi }$ = $r^{2}$
r = $\sqrt{ \frac{A}{4 \pi } }$

I don't see an option for my answer, but this should be right..

Hope this helped though!