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Question
Find the surface area and volume of sphere of the following radius. (π = 3.14 )
9 cm
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Solution
Radius of the sphere, r = 9 cm
Surface area of the sphere = 4πr2
= 4 × 3.14 × (9 cm)2
= 1017.36 cm2
Volume of the sphere = `4/3`πr3
= `4/3` x 3.14 x (9 cm)3
= 3052.08 cm3
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