Question

The ratio of the surface
areas of 2 spheres is 16:81.
What is the ratio of their
volumes?
1:1
2:3
4:9
64:729​

Answer 1

Step-by-step explanation:

S.A. of sphere = 4πr^2

Ratio of S.A. of 2 sphere are 16:81

there, ratio of radius

4πr^2/4πr^2= 16/81

r/r=4:9

there vol. in ratio

4/3πr^3=4/3πr^3 = 64:729