# Find the volume of a sphere whose radius is

(i) 7 cm (ii) 0.63 m

**Solution:**

We will find the volume of a sphere by using the volume of the spheres formula = 4/3πr^{3}

i) Radius of the sphere, r = 7 cm

Volume of the sphere = 4/3πr^{3}

= 4/3 × 22/7 × 7 cm × 7 cm × 7 cm

= 4312/3 cm^{3}

= 1437.33 cm^{3}

ii) Radius of the sphere, r = 0.63m

Volume of the sphere = 4/3πr^{3}

= 4/3 × 22/7 × 0.63 m × 0.63 m × 0.63 m

= 1.047816 m^{3}

= 1.05 m^{3} (approx.)

**Video Solution:**

## Find the volume of a sphere whose radius is (i) 7 cm (ii) 0.63 m

### NCERT Solutions for Class 9 Maths - Chapter 13 Exercise 13.8 Question 1:

**Summary:**

The volume of the sphere with a radius of 7cm is 1437.33 cm^{3} and the volume of the sphere with a radius of 0.63m is 1.05 m³.