Write a function for the area A of a square given the perimeter P of the square.

asked Sep 22, 2016 188k views

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$A=a^2\\ P=4a \Rightarrow a=(P)/(4)\\ A=\left((P)/(4)\right)^2\\ A=(P^2)/(16)$

Lars Behnke answered Sep 29, 2016

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