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document.write( "A rectangular yard has an area of 2160 square feet. The length of the yard is three feet longer than its width. What is the perimeter of the yard? \n" );
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Algebra.Com's Answer #451724 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! AREA=L*W \n" ); document.write( "L=W+3 \n" ); document.write( "2,160=(W+3)W \n" ); document.write( "2,160=W^2+3W \n" ); document.write( "W^2+3W-2,160=0 \n" ); document.write( "(W+48)(W-45)=0 \n" ); document.write( "W-45=0 \n" ); document.write( "W=45 ANS. FOR THWE WIDTH. \n" ); document.write( "L=45+3=48 ANS. FOR THE LENGTH. \n" ); document.write( "PROOF: \n" ); document.write( "2,160=45*48 \n" ); document.write( "2,160=2,160 \n" ); document.write( "P=2L+2W \n" ); document.write( "P=2*48+2*45 \n" ); document.write( "P=96+90 \n" ); document.write( "P=186 ANS. FOR THE PERIMETER. \n" ); document.write( " |