Question

the volume of a sphere of radius 3r , is

Answer 1

Answer:

Volume of sphere =(4/3)pi ×r^3

Radius =3r

Volume of sphere =36pi r^3

Answer 2

The volume of a sphere is $V = 36 \times \pi \times  r ^{3}$

Step-by-step explanation:

The volume of a sphere is $V = \frac{4}{3} \times \pi \times r^{3}$

Given that radius is 3r

$\Rightarrow V = \frac{4}{3} \times \pi \times \left (3r  \right )^{3}$

$\Rightarrow V = \frac{4}{3} \times \pi \times 27 \times r ^{3}$

$\Rightarrow V = 36 \times \pi \times  r ^{3}$

The volume of a sphere is $V = 36 \times \pi \times  r ^{3}$