document.write( "Question 719055: the length of a rectangle is 100ft. its area is twice the perimeter. How wide is the rectangle? \n" ); document.write( "
Algebra.Com's Answer #441170 by lwsshak3(11628)\"\" \"About 
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the length of a rectangle is 100ft. its area is twice the perimeter. How wide is the rectangle?
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\n" ); document.write( "let x=width of the rectangle
\n" ); document.write( "perimeter=2*length+2*width=200+2x
\n" ); document.write( "Area=length*width=100x
\n" ); document.write( "area=2*perimeter
\n" ); document.write( "100x=2(200+2x)
\n" ); document.write( "100x=400+4x
\n" ); document.write( "96x=400
\n" ); document.write( "x=400/96≈4.17
\n" ); document.write( "How wide is the rectangle? 4.17 ft
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