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Law Incorporation [45]
3 years ago
15

The length of a rectangular swimming pool is twice as long as its width. If the perimeter of the pool is

Mathematics
1 answer:
Nitella [24]3 years ago
4 0

The perimeter of a rectangle is the sum of its sides, which are two widths and two lengths:

p=w+w+l+l

Since the length is twice the width, we have l=2w, and the formula for the perimeter becomes

p=w+w+2w+2w=6w

So, we have

6w=120 \iff w=\dfrac{120}{6}=20

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