What is Earth's spatial surface?

1 Answer
Sep 14, 2017

Total surface area of earth: 510,072,000 sq km

Total water surface area: 70.8% (361,132,000 sq km)
Total land surface area: 29.2% (148,940,000 sq km)

Ref: http://chartsbin.com/view/wwu


According to modern estimates, the surface area of the Earth is approximately 510 million square km #(5.1 x 10^8 km^2)# or 196,900,000 square miles. Determining this was not only a matter of ascertaining Earth’s dimensions, but also its proper shape.

A nice detailed discussion of the non-spherical model calculations (with graphics) is here: