Question

The numeric value of Volume and Surface area of a Sphere is equal . Find the radius

of the Sphere.​

Answer 1

let volume be V and Surface area be A

V= 4/3 πr³ and A=4πr²

according to the question

4/3 πr³ = 4πr²

πr³ = 3πr²

r= 3πr²/r²

r= 3π = 9.42cm

Answer 2

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The numeric value of Volume and Surface area of a Sphere is equal . Find the radius of the Sphere.

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4πr² = 34

πr³

or 1= 3r

or r=3