document.write( "Question 1072799: The perimeter of a rectangle is 128 cm. The width is 3 times the length. What are the dimensions of the rectangle? \n" ); document.write( "

Algebra.Com's Answer #687638 by Fombitz(32388) $\"\"$ $\"About$

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For a rectangle,
\n" ); document.write( " $\"P=2%28L%2BW%29\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"2%28L%2BW%29=128\"$
\n" ); document.write( " $\"L%2BW=64\"$
\n" ); document.write( "and
\n" ); document.write( " $\"W=3L\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"L%2B3L=64\"$
\n" ); document.write( " $\"4L=64\"$
\n" ); document.write( "Solve for L then use either equation to solve for W.
\n" ); document.write( " \n" ); document.write( "

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