document.write( "Question 150483: A roof is shaped like a rectangle with a length that is twice the width and an area of 1800 sq ft. What is the lenght, width and perimeter of the roof? \n" ); document.write( "
Algebra.Com's Answer #110452 by rajagopalan(174)\"\" \"About 
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A roof is shaped like a rectangle.
\n" ); document.write( "Let the width=x
\n" ); document.write( "Length=2x
\n" ); document.write( "Area=2x^2=1800 sq ft.
\n" ); document.write( "2x^2=1800
\n" ); document.write( "x^2=1800/2=900
\n" ); document.write( "x=sqrt900=30
\n" ); document.write( "Width=30
\n" ); document.write( "Length=2*30=60
\n" ); document.write( "perimeter=2(x+2x)
\n" ); document.write( "=2(30+60)
\n" ); document.write( "=2(90)
\n" ); document.write( "=180 ft
\n" ); document.write( "
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