SOLUTION: Earth's radius is approximately 4000 mi. About two-thirds of Earth's surface is covered by water. Estimate the land area on Earth.
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Question 310904: Earth's radius is approximately 4000 mi. About two-thirds of Earth's surface is covered by water. Estimate the land area on Earth.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Diameter = 4000 miles
surface area of the earth = 4*pi*r^2
= 4*pi*2000^2
= 50 265 482.5
If 2/3 is water 1/3 will be land
.
1/3 of this will be 1/3 *50265482
16 755 160 .8 square miles will be land area
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