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ML Aggarwal Solutions Class 10 Mathematics Solutions for Mensuration Exercise 17.2 in Chapter 17 - Mensuration
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Find the curved surface area of a right circular cone whose slant height is 10 cm and base radius is 7 cm.
Answer:
Solution:
The shape of a cone is produced by stacking several triangles and spinning them around an axis. It has a total surface area and a curved surface area because it has a flat base.
Given slant height of the cone, l = 10 cm
Base radius, r = 7 cm
Curved surface area of the cone = π rl
= (22/7)×7×10 = 220 cm2
Hence the curved surface area of the cone is 220 cm2. 
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