Question

the radius of a sphere is doubled then the ratio of volume of first sphere to that of the second ?

Answer 1

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Answer 2

Let V1  and V2  be the volumes of first and second sphere respectively. Then,

$\frac{v_{1} }{v_{2} }=\frac{\frac{4}{3}\pi r^{3} }{\frac{4}{3}\pi (2r^{3})} = \frac{1}{8}$