document.write( "Question 715277: if the radius of a circle is increased by 30%,then the area of the circle is increased by__________________ \n" ); document.write( "
Algebra.Com's Answer #439349 by Simnepi(216)\"\" \"About 
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30%=\"3%2F10\"=0.3
\n" ); document.write( "if we call the radius x then the new radius is 1.3x
\n" ); document.write( "since \"area+=+pi+%2A+%28radius%29%5E2\"
\n" ); document.write( "squaring the radius gives \"1.69%2A%28x%29%5E2\"
\n" ); document.write( "so the area has increased by
\n" ); document.write( "0.69 or 69%
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