document.write( "Question 1069459: If each side of a square be increased by 10% the percentage increase in area is \n" ); document.write( "

Algebra.Com's Answer #684649 by Fombitz(32388) $\"\"$ $\"About$

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Let say the side of the square is $\"s\"$ .
\n" ); document.write( "The area is then $\"A%5B1%5D=s%5E2\"$ .
\n" ); document.write( "Increasing the side by 10% makes the side $\"%281%2B10%2F100%29s=1.1s\"$
\n" ); document.write( "So the area is now $\"A%5B2%5D=%281.1s%29%5E2=1.21s%5E2\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"%28%28A%5B2%5D-A%5B1%5D%29%2FA%5B1%5D%29%2A100=%28%281.21s%5E2-s%5E2%29%2Fs%5E2%29%2A100=21\"$
\n" ); document.write( "21% increase \n" ); document.write( "

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