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 = 4/3πr³

i) Radius of the sphere, r = 7 cm

Volume of the sphere = 4/3πr³

= 4/3 × 22/7 × 7 cm × 7 cm × 7 cm

= 4312/3 cm³

= 1437.33 cm³

ii) Radius of the sphere, r = 0.63m

Volume of the sphere = 4/3πr³

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

= 1.047816 m³

= 1.05 m³ (approx.)

☛ Check: NCERT Solutions for Class 9 Maths Chapter 13

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 cm³ and the volume of the sphere with a radius of 0.63m is 1.05 m³.

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