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well you know that to be called a square a shape must have sides that are all the same size.

So knowing this and knowing how to find the area of a shape being Length x width

You simply square root 100 and you find that its length and width are both 10

so you know the perimeter is 40

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Wiki User

15y ago
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Anonymous

Lvl 1
4y ago

40

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Anonymous

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4y ago

8

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Q: What is the perimeter of a square if it's area is 100?
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