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document.write( "the length of a rectangle is 3 times its width. the perimeter of the rectangle is 72 cm. find the demensions of the retangle. \n" );
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Algebra.Com's Answer #438544 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! P=2L+2W \n" ); document.write( "L=3W \n" ); document.write( "72=2*3W+2W \n" ); document.write( "72=6W+2W \n" ); document.write( "72=8W \n" ); document.write( "W=72/8 \n" ); document.write( "W=9 ANS. FOR THE WIDTH. \n" ); document.write( "L=3*9=27 ANS. FOR THE LENGTH. \n" ); document.write( "PROOF. \n" ); document.write( "72=2*27+2*9 \n" ); document.write( "72=54+18 \n" ); document.write( "72=72 \n" ); document.write( " |