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Pi, or 3.14159
Pi is the ratio of a circle's circumference to its diamter. It equals approximately 3.14159 Pi = circumference/diameter
It means pi to the power of two. pi square = pi * pi
Pi is a number that is never ending, but most people only use the first couple of digits. pi = 3.14159265 pi is the ratio of a circles' diameter to its circumference
Pi