Forgo the oceans.
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Using the diameter of the earth at the equator, and the formula Area =4 divided by 3 times pi times the radius cubed, it would be 4 over 3 times 3.14 times 3963.41 times 3963.41 times 3963.41 square miles. About 29.2 percent of the earth's surface is land
In round numbers .3 times 4 over 3 times 3 times 64 billion square miles. With a population of 7 billion that leaves about 7 square miles per person.
You'd better check my math, though.wiki.answers.com/Q/What_percentag…
In round numbers .3 times 4 over 3 times 3 times 64 billion square miles. With a population of 7 billion that leaves about 7 square miles per person.
You'd better check my math, though.wiki.answers.com/Q/What_percentag…