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approximately how many persons would be per square mile?

Earth's human population is around 6*10 20th power and its total area excluding the polar cap is roughly5*10 10th power square mile. if human population will uniformly distributed over all land approximately how many persons would be per square mile?
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1 Answer

person per square mile = total population/total area
 
=> 6 x 1020 / 5 x 1010 = 6/5 x 1020-10 = 1.2 x 1010 = 12000 million people per sqaure mile. This is very large, check your data. You got the concept now.
:)