document.write( "Question 294525: The length of a rectangle is 4 centimeters longer than its width. If the perimeter is 28 centimeters, find the length and the width. \n" ); document.write( "
Algebra.Com's Answer #212518 by dabanfield(803)\"\" \"About 
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The length of a rectangle is 4 centimeters longer than its width. If the perimeter is 28 centimeters, find the length and the width.\r
\n" ); document.write( "\n" ); document.write( "Let l be the be the length and w the width of the rectangle. Then we have:\r
\n" ); document.write( "\n" ); document.write( "1.) l = w + 4
\n" ); document.write( "2.) 2*l + 2*w = 28\r
\n" ); document.write( "\n" ); document.write( "Substituting w+4 for l in equation 2.) we have: \r
\n" ); document.write( "\n" ); document.write( "2*(w+4) + 2*w = 28
\n" ); document.write( "2*w + 8 + 2*w = 28
\n" ); document.write( "4*w = 28-8
\n" ); document.write( "4*w = 20
\n" ); document.write( "w = 5\r
\n" ); document.write( "\n" ); document.write( "From 1.) we have l = w + 4 = 5+4 = 9
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