Find the volume of the right circular cone with
i) radius 6 cm, height 7 cm  ii) radius 3.5 cm, height 12 cm

Solution:

Volume of a cone of base radius r, and height h, = 1/3πr²h

i) Radius of the cone, r = 6 cm

Height of the cone, h = 7 cm

Volume of the cone = 1/3πr²h

= 1/3 × 22/7 × 6 cm × 6 cm × 7 cm

= 264 cm³

ii) Radius of the cone, r = 3.5 cm

Height of the cone, h = 12 cm

Volume of the cone = 1/3πr²h

= 1/3 × 22/7 × 3.5 cm × 3.5 cm × 12 cm

= 154 cm³

☛ Check: NCERT Solutions for Class 9 Maths Chapter 13

Video Solution:

Find the volume of the right circular cone with i) radius 6 cm, height 7 cm ii) radius 3.5 cm, height 12 cm

NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.7 Question 1

Summary:

For a right circular cone, we have found that the volume of the first cone with radius 6 cm, height 7 cm is 264 cm³ and the volume of the second cone radius 3.5 cm, height 12 cm is154 cm³.

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