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To find the perimeter of the rectangle you add up all the sides.

There are two lengths and widths for every rectangle, so you know the length is 40 meters x 2 = 80 meters.

Perimeter is the total length of all the sides so you just minus 120 from the two lengths which is 80.

So the width is 40, divide 2 (2 widths) = 20 meters.

Width = 20 meters OR if they're asking for widthS then it'll be 40 meters, but they're not.

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Q: What is width of rectangle with length 40 meters and perimeter 120 meters?
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