document.write( "Question 1107979: The radius of the earth is 6400km. Find the surface area of the earth in square meter. \n" ); document.write( "
Algebra.Com's Answer #723019 by Alan3354(69443)\"\" \"About 
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The radius of the earth is 6400km. Find the surface area of the earth in square meter.
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\n" ); document.write( "r = 6400 km = 6400000 meters
\n" ); document.write( "SA = 4pi*r^2
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