Question

Please explain and answer ​

Answer 1

Step-by-step explanation:

$v \: = \: \pi \: {r}^{2} \times \frac{h}{3}$

rearrange to get

$48\pi \: = \: \pi {r}^{2} \times \frac{9}{3}$

remove pi from both sides

$48 \: = {r}^{2} \: \times 3$

$\frac{48}{3} = {r}^{2}$

$16 = {r}^{2}$

$r = \sqrt{16}$

$r = 4$