Pi — 3.14159 a mathematical constant for the ratio of a circle’s circumference to its diameter
More information
More information
See also:
Buffon’s Needle Problem — a mathematical problem posed by Georges-Louis 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