document.write( "Question 418578: If the length of a rectangle is 3 times its width, and if its area is 108, what is its perimeter?
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Algebra.Com's Answer #292891 by mananth(16946)\"\" \"About 
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width=x
\n" ); document.write( "length = 3x
\n" ); document.write( "3x*x=108
\n" ); document.write( "3x^2=108
\n" ); document.write( "x^2=36
\n" ); document.write( "x=6 the width
\n" ); document.write( "Length = 18
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\n" ); document.write( "Perimeter = 2*(L+W)
\n" ); document.write( "Perimeter =2*(6+18)
\n" ); document.write( "Perimeter = 48 units
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