Every year, mathematicians, educators, and enthusiasts mark March 14 as Pi Day, celebrating one of ... infinitely beyond its commonly known approximation, 3.14159. Pi is more than just a classroom ...

Around Pi Day, or March 14, you know 3-1-4 ... you will come up with a very close approximation of the circumference of their head. I am not sure why that was the preferred method of doing ...

In Archimedes' day, close approximations of pi had been known for over 1,000 years. An Egyptian document dated to 1650 B.C., for example, gives a value of 4 (8/9) 2, or 3.1605. Archimedes' value ...