If radius of a sphere is 21 cm, what will be its volume?

Correct option is D

Given:

Radius of a sphere is 21 cm.

Formula used:

$$\text { Area of a Sphere }=\frac{4 \pi}{3}(\text { radius })^3$$ 

Solution:

$$\text { Volume of the sphere }=\frac{4 \pi}{3} \times 21^3=38808 \mathrm{~cm}^3$$ 

Thus, the correct answer is option(d).