Pi 
Pi  3.14159 a mathematical constant for the ratio of a circle's circumference to its diameter
More information See also: Buffon's Needle Problem  a mathematical problem posed by GeorgesLouis Leclerc, Comte de Buffon in the 1700's asking the probability of a needle lying across two strips of the flooring MathWorld  illustration of Buffon's Needle Problem Buffon's Needle  JAVA applet demonstrating the problem 

Last Updated ( Monday, 30 October 2006 ) 
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