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Question
Find the surface area and volume of sphere of the following radius. (π = 3.14 )
3.5 cm
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Solution
Radius of the sphere, r = 3.5 cm
Surface area of the sphere = 4 πr2
= 4 × 3.14 × (3.5)2
= 153.86 cm2
Volume of the sphere = `4/3`πr3
= `4/3 xx 3.14 xx (3.5)^3`
= 179.50 cm3
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