Question

Solve the formula A= 8/2 for r.

Answer 1

Answer:

The steps are :

$A = \pi {r}^{2}$

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

$r = \sqrt{ \frac{A}{\pi} }$

Therefore, the answer is B.

Answer 2

Answer: the answer is B.