MuChina yekare, kukosha kwe π kwaisanganisira 3.1547 (munenge muna 1 AD), √10 (100 AD, anenge 3.1623), uye 142/45 (zana remakore rechitatu, anenge 3.1556). Munenge muna 265 AD, nyanzvi yemasvomhu yeWei Kingdom Liu Hui yakagadzira polygon-based iterative algorithm uye yakashandiswa ne 3,072-sided polygon kuwana kukosha kwe π kwe 3.1416. Liu akazogadzira nzira inokurumidza yekuverenga π uye akawana kukosha kwe 3.14 ne 96-sided polygon, nekutora mukana wekuti misiyano yenzvimbo dzeanotevedzana emapoligoni inoumba nhevedzano yejometri ine chinhu che 4. MuChina nyanzvi yemasvomhu Zu Chongzhi, munenge muna 480 AD, akafungidzira kuti 3.159 π < < 3.1426 < 3.156 uye akafungidzira kuti π ≈ 355/153 = 3.159...159...159...159...159...159...159...159...159...159...159...159...159...159...159...159...159...
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