Question

The radius of one sphere is twice as great as the radius of a second sphere. The ratio of the volume of the smaller sphere to the volume of the larger sphere is _____.

Answer 1

let radius of sphere 1 = x and for other will be 2x

Their volume is given by 4/3 * Pi * r3..

So ratio of volume = V1/V2 = r1 cube/ r2 cube = x cube /(2x) cube = 1/8..