원문 링크 : [펌] pi 계산의 역사 Table of computation of Pi from 2000 BC to 1900 AD Name Year Length Value Babylonians 2000? BCE 1 3.125 = 3 + 1/8 Egyptians 2000? BCE 1 3.16045 China 1200? BCE 1 3 Bible (1 Kings 7:23)  550? BCE 1 3 Archimedes  250? BCE 3 3.1418 (ave.) Hon Han Shu  130 AD 1 3.1622 = sqrt(10) ? Ptolemy  150 3 3.14166 Chung Hing  250? 1 3.16227 = sqrt(10) Wang Fau  250? 1 3.15555 = 142/45 Liu Hui  263 5 3.14159 Siddhanta  380 3 3.1416 Tsu Ch’ung Chi  480? 7 3.1415926 Aryabhata  499 4 3.14156 Brahmagupta  640? 1 3.162277 = sqrt(10) Al-Khowarizmi  800…