It is worth p times p. The value of p2 depends on what p is worth.
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i have a quarter with no back on it no date with a P
1 metre by 1 metre :P
The formula for the area (A) of a square is A = L2 where L is the side length of the square. Therefore L = √A. The formula for the perimeter (P) of a square is P = 4L : as L = √A, then P = 4√A When A = 144, then P = 4 √144 = 4 x 12 = 48.
Perimeter of a square is 4*a...where,a=side or edge of the square.
You could calculate it by integrating the chi-square probability distribution function but you are likely to be much better off using a table in a book or on the web.