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ML Aggarwal Solutions Class 10 Mathematics Solutions for Mensuration Exercise 17.3 in Chapter 17 - Mensuration
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Find the surface area of a sphere of radius : 10.5 cm
Answer:
Solution:
The curved surface area is equal to the whole area of the sphere since the sphere is completely curved in shape.
Given radius of the sphere, r = 10.5 cm
Surface area of the sphere = 4π r2
= 4×(22/7)×10.52
= 1386 cm3
Hence the surface area of the sphere is 1386 cm2. 
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