Question

The total surface area of Earth is about 1.97 × 10^8 square miles. The surface area of land on Earth is about 5.73 × 10^7 square miles.
Find the ratio of surface area of land to that of the entire planet.

Answer 1

divide the surface area of land by earth

5.73/1.97 10^7/10^8

2.91 x 10^-1 = .291

Answer 2

Thank you so much!