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)\"\" \"About 
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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
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