Question

If radius of earth is approximately 4 times that of moon, then earth's surface area is 8 times that of moon. State with true or false.

• A. True
• B. False

Answer 1

The correct option is B

False

Let $r_e$ be radius of earth and $r_m$ be radius of moon

$r_e$ =4 $r_m$

Total surface area of earth = 4$\pi$${r_e}^2$ = 4π(4$r_m{)}^2$ = 16x(4$\pi$ ${r_m}^2$) = 16 times total surface area of moon