Why are there 22 letters in the hebrew alphabet, or more likely alephbet? Perhaps because 22/7 = 3.142 857 142.., is so close to p = 3,141 592 653..

And 7 is *so* important.. 22/7 seems pretty close to p : 0.04%..

At those times, though, p had poor approximations, such as 3 + 1/8..

Table of computation of Pi from 2000 BC to now :

Babylonians 2000? BCE 1 3.125 = 3 + 1/8

Egyptians 2000? BCE   3.16045

China 1200? BCE    3

Bible (1 Kings 7:23) 550? BCE   3

Archimedes 250? BCE   3.1418 (ave.)

http://blog.thecirclefoundationproject.org/