If the ratio of the volumes of two spheres is 1:8 then ratio of their surface areas is(a) 1:2 (b) 1:4 (c) 1:8 (d) 1:16
(b) 1 : 4
Suppose that r and R are the radii of the spheres.
Then we have:
∴ Ratio of surface area of spheres = 4πr24πR2=(rR)2=14