document.write( "Question 251969: the length is twice the width and area is 18
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Algebra.Com's Answer #183710 by richwmiller(17219)\"\" \"About 
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w*2w=18
\n" ); document.write( "2w^2=18
\n" ); document.write( "w^2=9
\n" ); document.write( "w=3 (we can't have a negative side)
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