document.write( "Question 767659: 4πrē in this why we use 4 and π ? And also we use1/3, 3/4 in other formula why we can not use the any think like 5/4, 8/3 \n" ); document.write( "
Algebra.Com's Answer #467806 by Alan3354(69443)\"\" \"About 
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4πrē in this why we use 4 and π ? And also we use1/3, 3/4 in other formula why we can not use the any think like 5/4, 8/3
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\n" ); document.write( "It's not clear what you're asking.
\n" ); document.write( "We do use 5/4 & 8/3 when appropriate.
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\n" ); document.write( "In the case of 4pi*r^2, that's the surface area of a sphere of radius r.
\n" ); document.write( "We use \"4pi%2Ar%5E2\" because that's what it is.
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