祖冲之生于429年死于500年,南北朝时代南朝数学家、天文学家.字文远.（今河北）人.祖冲之在前人推算圆周率的基础上,利用割圆术的方法继续推算,得出圆周率值在3.1415926和1415927之间.
The ancestor flushes it to be born dies in 429 years in 500 years,the Southern and Northern Dynasties time Southern Dynasty mathematician,the astronomer.Character Wen Yuan.(Now Hebei) person.The ancestor flushes it in the predecessor to calculate the girth quotient in the foundation,the use shears the round technique the method to continue to calculate,obtains the girth quotient value between 3.1415926 and 1415927
