document.write( "Question 143587: a sphere has a radius of 4. find the surface area \n" ); document.write( "
Algebra.Com's Answer #104496 by stanbon(75887)\"\" \"About 
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a sphere has a radius of 4. find the surface area
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\n" ); document.write( "Surface Area = 4*pi*r^2
\n" ); document.write( "Surface Area = 4*pi*16 = 64pi sq. units
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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