3 Tutor System
Starting just at 265/hour

# Find the volume of a sphere whose radius isi) 7 cmii) 0.63 m

i)Given :
Radius of sphere = 7 cm

We know that,
Volume of sphere
= $$\frac{4}{3}{\pi}{r}^3$$
= $$\frac{4}{3} × \frac{22}{7} × {7}^3$$ $${cm}^3$$
= $$\frac{4312}{3}$$ $${cm}^3$$
= $$1437\frac{1}{3}$$ $${cm}^3$$

Therefore, the volume of the sphere is $$1437\frac{1}{3}$$ $${cm}^3$$.

ii) Given :
Radius of sphere = 0.63 m

We know that,
Volume of sphere
= $$\frac{4}{3}{\pi}{r}^3$$
= $$\frac{4}{3} × \frac{22}{7} × {0.63}^3$$ $${m}^3$$
= $$1.0478$$ $${m}^3$$

Therefore, the volume of the sphere is $$1.05$$ $${m}^3$$ (approx.)