Find the volume of a sphere whose radius is 0.63 m.

Given,

Radius of the sphere (r) = 0.63 m

By formula,

Volume of the sphere = $\dfrac{4}{3}πr^3$

Substituting values we get :

$= \dfrac{4}{3} \times \dfrac{22}{7} \times (0.63)^3 \\[1em] = \dfrac{4}{3} \times \dfrac{22}{7} \times 0.250047 \\[1em] = \dfrac{88}{21} \times 0.250047 \\[1em] = \dfrac{22.004}{21} \\[1em] = \text{1.05 m}^3$

Hence, the volume of sphere = 1.05 m³.