document.write( "Question 591200: The length of a rectangle is twice it's width. If the perimeter is 54cm find it's width \n" ); document.write( "
Algebra.Com's Answer #375529 by nerdybill(7384)\"\" \"About 
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The length of a rectangle is twice it's width. If the perimeter is 54cm find it's width
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\n" ); document.write( "Let w = width
\n" ); document.write( "then
\n" ); document.write( "2w = length
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\n" ); document.write( "since:
\n" ); document.write( "perimeter = 2(width+length)
\n" ); document.write( "we have
\n" ); document.write( "54 = 2(w + 2w)
\n" ); document.write( "54 = 2(3w)
\n" ); document.write( "27 = 3w
\n" ); document.write( "9 cm = w (width) \n" ); document.write( "
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