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Perimeter = 2 * (L + B) = 2L + 2B = 4L (all sides are equal in square)

4L = 40 m

So, L = 40/4 m = 10 m

Area = L2 = (10)2 = 100 m2

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Q: What is the area of a square that has a perimeter of 40metres?
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