Question

Solve the formula S =4pi r^2

Answer 1

Answer:

The answer is option A

Step-by-step explanation:

S = 4πr²

First of all divide both sides by 4π

That's

$\frac{4\pi {r}^{2} }{4\pi} = \frac{S}{4\pi} \\ {r}^{2} = \frac{S}{4\pi}$

Find the square root of both sides in order to isolate r

That's

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

We have the final answer as

$r = \sqrt{ \frac{S}{4\pi} }$

Hope this helps you