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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The perimeter is 40 inches.
Trick question. 100. :)
40 meters.
100
A square with a perimeter of 40 inches has sides 10 inches long which will give it an area of 100 inches2