The volumes of two spheres are in the ratio 64 : 125. Then the ratio of their surface areas is:

16/25

If the ratio of the volumes of two spheres is given then the ratio of their radius will be equal to the cube root of the volume =

Given,

Ratio of their volume = 64 : 125

Then the ratio of their radius = 4 : 5

Now the ratio of their areas = square of the radius

= 4² : 5² = 16 : 25