document.write( "Question 1126231: The radius of a sphere is increased by 10%. Find the percentage increase in its surface area \n" ); document.write( "
Algebra.Com's Answer #742546 by Alan3354(69443)\"\" \"About 
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The radius of a sphere is increased by 10%. Find the percentage increase in its surface area
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\n" ); document.write( "Area is a function of the square of the radius.
\n" ); document.write( "--> 1.1^2 = 1.21
\n" ); document.write( "-- 21% increase
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