Question

The ratio of the weights of two spheres is 8 : 27 and the ratio of weights per 1 cc of materials of two is 8 : 1 . the ratio of the radii of the spheres is

Answer 1

Ratio of volume of sphere × ratio of weight per 1 cc. of material of each

= Ratio of weight of two sphere (by formula)

Putting values we get: (r1/r2) = (8/1) *(27/8) = (3/1).

Finally, we get the ratio of radii of spheres as 3:1. Simple calculation is involved here.