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16s + 4s = 20s
(4s + 1)(4s + 1) or (4s + 1)2
since A=4S then S=A/4 A is not 4S. The perimeter P is 4S. The area is S multiplied by S or S squared. therefore the side of a square is the square root of the area.
4.56
They are 4's.