Question

If volumes of two spheres are in the ratio 64:27, then the ratio of their surface areas is 

A. 3 : 4  B. 4 : 3 C. 9 : 16 D. 16 : 9

Answer 1

D. 16 : 9

Let the radius of spheres be r₁ and r₂ and we know that

Now,

Surface area of sphere = 4πr²

where r = radius

So, ratio of surfaces areas is 16 : 9