document.write( "Question 584847: The length of a rectangle is five times its width.
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document.write( "If the perimeter of the rectangle is 72m, find its area. \n" );
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Algebra.Com's Answer #372925 by JBarnum(2146)![]() ![]() You can put this solution on YOUR website! given/known \n" ); document.write( "l=5w \n" ); document.write( "p=2(l+w) \n" ); document.write( "a=lw \n" ); document.write( ". \n" ); document.write( "72=2((5w)+w) \n" ); document.write( "36=6w \n" ); document.write( "6=w \n" ); document.write( ". \n" ); document.write( "a=(5w)w=5w^2 \n" ); document.write( "a=5(6)^2 \n" ); document.write( "a=5(36) \n" ); document.write( "a=180 \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " |