document.write( "Question 713744: \r
\n" ); document.write( "\n" ); 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" ); document.write( "

Algebra.Com's Answer #438544 by checkley79(3341)\"\" \"About 
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( "
\n" );