Question

if volume of a hemisphere is 18 pie cubic cm then it's radius is

please answer​

Answer 1

Mark it brainliest please

Answer:

volume of hemisphere=2/3πr^3

2/3πr^3=18πcm^3(π from both sides will be cancelled)

r^3=(18x3)/2

r^3=9x3

Radius =3cm

by shagun

Answer 2

Given :-

• Volume of a hemisphere = 18πcm³

To Find :-

• it's Radius.

Solution :-

As we know that,

$\boxed{ \sf \: Volume \: of \: hemisphere = \frac{2}{3} \pi \: r {}^{3} }$

[ Putting values ]

$\hookrightarrow \sf 18π = \frac{2}{3} \pi \: r {}^{3}$

$\hookrightarrow \sf \: r {}^{3} = \frac{18 \pi \: \times 3}{2 \pi}$

$\hookrightarrow \sf \: r {}^{3} = 9 \times 3$

$\hookrightarrow \sf \: r {}^{3} = 27$

$\hookrightarrow \sf \: r {}^{3} = 3 {}^{3}$

$\hookrightarrow \sf \red{ r = 3cm}$

Hence,

• It's Radius is 3cm.