document.write( "Question 957156: The perimeter of a rectangle is 12 cm. Its length is twice its width. Find the rectangle.
\n" ); document.write( "Is it x(2x)^2=12 \n" ); document.write( "

Algebra.Com's Answer #584844 by Fombitz(32388) $\"\"$ $\"About$

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No.
\n" ); document.write( "The perimeter of a rectangle is,
\n" ); document.write( " $\"P=2%28L%2BW%29\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"2%28L%2BW%29=12\"$
\n" ); document.write( " $\"L%2BW=6\"$
\n" ); document.write( "But you also know,
\n" ); document.write( " $\"L=2W\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"2W%2BW=6\"$
\n" ); document.write( " $\"3W=6\"$
\n" ); document.write( " $\"W=2\"$ $\"cm\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"L=2%282%29\"$
\n" ); document.write( " $\"L=4\"$ $\"cm\"$ \n" ); document.write( "

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