# SOLUTION: The length of a rectangle is twice the width. The perimeter is 84cm more than the width. Make a diagram and find the rectangle's dimensions.

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 Question 162180: The length of a rectangle is twice the width. The perimeter is 84cm more than the width. Make a diagram and find the rectangle's dimensions.Answer by KnightOwlTutor(293)   (Show Source): You can put this solution on YOUR website!We know that the equation for determining the perimeter of a rectangle is P=L+w+L=W P=2L+2W We know that L=2W We know that the perimeter is=W+84cm W+84=2(2W)+2W w+84=4W+2W W+84=6W Subtract w from both sides 84=5W Divide both sides by 5 W=16.8 L=33.6 2(16.8)+2(33.6)=33.6+67.2=100.8 Let's double check our answer We know that the perimeter was 84 more than the width 100.8-84=16.8