Question

The volumne of cylinder is 448πcm and height is 7. Find its radius

Answer 1

$\pi {r}^{2} h$
formula of volume of cylinder
volume of cylinder = 448 πcm
448π = π r ^2 7
pie gets cancel on both sides
therefore
$\frac{448}{7 } = {r}^{2}$
${r }^{2} = 64$
$r = \sqrt{64}$
$r = 8$