Culture/Person

Approximate Time

Value Used

Babylonians  2000 BC  3 + 1/8 = 3.125 
Egyptians  2000 BC  3.16045 
China  1200 BC  3 
Bible mentions it^{}  550 BC  3 
Archimedes  250 BC  3.1418 
Hon Han Shu  130  sqrt (10) = 3.1622 
Ptolemy  150  3.14166 
Etc... 