SOLUTION: A peice of wire is 42 com long and is bent into the shape of a rectangle who width is twice its length. Find the dimensions of the recanhle.

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Question 549988: A peice of wire is 42 com long and is bent into the shape of a rectangle who width is twice its length. Find the dimensions of the recanhle.
Answer by TutorDelphia(193) About Me  (Show Source):
You can put this solution on YOUR website!
The 42cm will become the rectangle's perimeter.
Our relevant formulas is
P=2L+2W (perimeter equals 2 times the length and 2 times the width)
We also know
W=2L
We can use that to sub in
P=2L+2(2L)
P=6L
42=6L
L=7
W=2L
W=2(7)
W=14
And to check 2*14+2*7=42