SOLUTION: If the perimeter of a rectangle is 120cm. What are its diamensions if its length is twice its width? Thanks abbey

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Question 890287: If the perimeter of a rectangle is 120cm. What are its diamensions if its length is twice its width? Thanks abbey
Found 2 solutions by cedrick30, MathTherapy:
Answer by cedrick30(3) About Me  (Show Source):
You can put this solution on YOUR website!
L-60 cm
W-30 cm

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
If the perimeter of a rectangle is 120cm. What are its diamensions if its length is twice its width? Thanks abbey

Let width be W
Then length = 2W
Since perimeter = 120 cm, then: 2W + 2(2W) = 120
2W + 4W = 120
6W = 120
W, or width = 120%2F6, or highlight_green%28highlight_green%2820%29%29
Length = 2(20), or highlight_green%28highlight_green%2840%29%29