document.write( "Question 156530: The width of a rectangle is 6 less than twice its length. If the area of the rectangle is 180 cm, what is the length of the diagonal? \r
\n" ); document.write( "\n" ); document.write( "Note: Your answer must be a number. It may not contain any arithmetic operations. \r
\n" ); document.write( "\n" ); document.write( "The length of the diagonal is?
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Algebra.Com's Answer #115338 by checkley77(12844)\"\" \"About 
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W=2L-6
\n" ); document.write( "L(2L-6)=180
\n" ); document.write( "2L^2-6L-180=0
\n" ); document.write( "2(L^2-3L-90)=0
\n" ); document.write( "\"L+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "L=(3+-SQRT[-3^2-4*1*-90])/2*1
\n" ); document.write( "L=(3+-SQRT9+360])/2
\n" ); document.write( "L=(3+-SQRT369)/2
\n" ); document.write( "L=(3+-19.21)/2
\n" ); document.write( "L=(3+19.21)/2
\n" ); document.write( "L=22.21/2
\n" ); document.write( "L=11.1 cm. IS THE LENGTH.
\n" ); document.write( "W=2*11.1-6
\n" ); document.write( "W=22.2-6
\n" ); document.write( "W=16.2 cm. IS THE WIDTH.
\n" ); document.write( "C^2=11.1^2+16.2^2
\n" ); document.write( "C^2=123.21+262.44
\n" ); document.write( "C^2=385.65
\n" ); document.write( "C=SQRT385.65
\n" ); document.write( "C=19.64 cm. LENGTH OF THE DIAGONAL.
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