Question

If the ratio of the radii of two spheres is 2:3, the ratio of their surface areas will be 8:27.

Answer 1

The ratio of 2 similar areas is the square of the ratio of their RADIUS or (sides)
R²=(2/3)² = 4/9 This should be the answer

Whereas R³ = (2/3)³ = 8/27 is the ratio of their volume & not area