Question

in a sphere,if radius is doubled,find the volume of it.

Answer 1

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Answer 2

volume of a sphere =4/3πr³

v=4/3πr³

if radius is doubled

then V' = 4/3π(2r)³ = 8(4/3πr³)

V' = 8V

show new volume equal to 8 times of original volume .