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ML Aggarwal Solutions Class 10 Mathematics Solutions for Mensuration Exercise 17.2 in Chapter 17 - Mensuration
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Curved surface area of a cone is 308 cm2 and its slant height is 14 cm.
Find radius of the base
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 curved surface area of the cone = 308 cm2
Slant height of the cone, l =14 cm
π rl = 308
(22/7)×r×14 = 308
r = 308×7/(22×14)
= 7
Hence the radius of the cone is 7 cm. 
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