document.write( "Question 951557: the length of a rectangle is 3times its worth. if the perimeter is 72cm. calculate the width of the rectangle \n" ); document.write( "
Algebra.Com's Answer #581155 by macston(5194)![]() ![]() You can put this solution on YOUR website! W=width; L=length=3W P=perimeter=2(L+W)=72 cm \n" ); document.write( "P=2(L+W) Substitute for L \n" ); document.write( "72cm=2(3W+W) \n" ); document.write( "72cm=8W divide each side by 8 \n" ); document.write( "9cm=W ANSWER The width of the rectangle is 9 cm. \n" ); document.write( "CHECK: \n" ); document.write( "L=3W=3(9cm)=27cm \n" ); document.write( "P=2(L+W) \n" ); document.write( "72cm=2(27cm+9cm) \n" ); document.write( "72cm=2(36cm) \n" ); document.write( "72cm=72cm \n" ); document.write( " \n" ); document.write( " |