You can't calculate the perimeter from the surface area, if you don't know what figure you are talking about. For example, the answer will be different for a circle, for a square, for a rectangle with a 2:1 side ratio, for a rectangle with a 3:1 ratio, for different ellipses, for a five-pointed star, etc.
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In a square, if perimeter=80 meters, then side=20 meters, and area= 400 square meters.
The perimeter of a square is 400 meters. write an equation for the perimeter and solve for the length of one side
The perimeter is 16 feet.
40 meters.
The square root of 100 is 10, so the edges of the square are 10 meters in length. As there are 4 edges then the perimeter will measure 10*4 = 40 meters