Question
The length of a rectangle is twice its width. If the
perimeter of the rectangle is 60 cm, what is the area?Solution
Let the width be w. Then, length l=2w Perimeter 2(l+w) =60  = 2(2w+w) =60 6w=60 w=10 So, length l=20. Area =l×w=20×10=200
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