document.write( "Question 774676: The length of a rectangle is 4 cm longer than the width. If the perimeter of the rectangle is 20 centimeters, what is the area of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #472376 by dkppathak(439)![]() ![]() You can put this solution on YOUR website! The length of a rectangle is 4 cm longer than the width. If the perimeter of the rectangle is 20 centimeters, what is the area of the rectangle? \n" ); document.write( "let width is x cm \n" ); document.write( "and lenghh is x+4 cm \n" ); document.write( "p= 2(l+b) \n" ); document.write( "20=2(x+4+x) \n" ); document.write( "20=2(2x+4) \n" ); document.write( "20=4x+8 \n" ); document.write( "4x=20-8 \n" ); document.write( "4x=12 \n" ); document.write( "x=12/4 \n" ); document.write( "x=3 \n" ); document.write( "length =7cm and width is 3cm \n" ); document.write( "area=lxb \n" ); document.write( "3x7 =21 cm^2 \n" ); document.write( "answer AREA =21 squere cm \n" ); document.write( " |