EntityQ10899270· pop 7· linked from 39 articlesLiu Hui's π algorithmSign in to savecalculation of π by 3rd century mathematician Liu HuiConnectionsPiConceptInternational Standard Book NumberEntityPythagorean theoremEntityHan dynastyEntitysubtractionEntitypolygonEntitySrinivasa RamanujanEntityInternational Standard Serial NumberEntityYuan dynastyEntityAryabhataEntityhexagonEntityPi DayEntityJin dynastyEntityFrançois VièteEntityZhang HengEntitysquaring the circleEntityCao WeiEntitydodecagonEntityLudolph van CeulenEntitycircumferenceEntityCategoriesCao WeiChinese mathematical discoveriesPi algorithms