祖率
祖率 詞語解釋
祖率
zǔ lǜ
ㄗㄨˇ ㄌㄩˋ
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南北朝時祖沖之算出圓周率的近似值在3.1415926和3.1415927之間,並指出圓周率的約率爲22/7,密率爲355/113。爲了紀念祖沖之,把他算出的近似值叫做祖率英文 the approximate ratio of the circumference of a circle to its diameter as calculated by Zu Chong Zhi 數