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Question
Find the surface area and volume of sphere of the following radius. (π = 3.14)
4 cm
Solution
Radius of the sphere, r = 4 cm
Surface area of the sphere = 4πr2
= 4 × 3.14 × (4)2
= 200.96 cm2
Volume of the sphere = `4/3`πr3
= `4/3 xx 3.14 xx (4)^3`
= 267.95 cm3
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