document.write( "Question 872924: The width of a rectangle is 20 cm. The diagonal is 8 cm more than the
\n" ); document.write( "length. Find the length of the rectangle.
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Algebra.Com's Answer #526529 by ewatrrr(24785)\"\" \"About 
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Applying the Pythagorean theorem
\n" ); document.write( "(L+8)^2 - 400 = L^2
\n" ); document.write( "L^2 + 16L + 64 - 400 = L^2
\n" ); document.write( " 16L + 64 = 400
\n" ); document.write( " 16L = 336
\n" ); document.write( " L = 21cm
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