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.

2 answers

divide the surface area of land by earth

5.73/1.97 10^7/10^8

2.91 x 10^-1 = .291
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