ICSE Board Question Based on Mensuration Chapter of M.L Aggarwal for class10

In this question you have to find the surface area of a sphere whose radius is given.

This is the Question Number 01, Exercise 17.3 of M.L Aggarwal.

Deepak BoraNewbie

# Find the surface area of a sphere of radius : (i) 14 cm (ii) 10.5 cm

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(i) Given radius of the sphere, r = 14 cmSurface area of the sphere = 4r^{2}= 4×(22/7)×14^{2}= 4×22×14×2= 2464 cm^{3}Hence the surface area of the sphere is 2464 cm^{2}.(ii) Given radius of the sphere, r = 10.5 cmSurface area of the sphere = 4r^{2}= 4×(22/7)×10.5^{2}= 1386 cm^{3}Hence the surface area of the sphere is 1386 cm^{2}.