document.write( "Question 289539: the length of a rectangle is four times the width.if the perimeter is 160m,find the width and the legth \n" ); document.write( "

Algebra.Com's Answer #209693 by Earlsdon(6294) $\"\"$ $\"About$

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Start with the formula for the perimeter of a rectangle:
\n" ); document.write( " $\"P+=+2L%2B2W\"$ Substitute: P = 160cm, L = 4W and solve for W.
\n" ); document.write( " $\"160+=+2%284W%29%2B2W\"$ Simplify.
\n" ); document.write( " $\"160+=+10W\"$ Divide both sides by 10.
\n" ); document.write( " $\"highlight%28W+=+16%29\"$ cm. and $\"L+=+4%2A16\"$ so...
\n" ); document.write( " $\"highlight%28L+=+64%29\"$ cm. \n" ); document.write( "

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