The radius of the earth is 3963 mi. what is the surface area of the earth in square meters? (1 mi = 1609 m.) '

Surface Area of a Sphere = 4 • π • radius²

Surface Area of a Sphere = 4 * 3.14159 * 3,693*3,693

Surface Area = 171,383,146.70 square miles

1 square mile = 1,609 * 1,609 = 2,588,881 square meters

171,383,146.70 square miles * 2,588,881 = 4.437 x 10^14 square meters