„In geometry his greatest achievement was an accurate value of π.“

—  Aryabhata

His rule is stated as: dn^2+(2a-d)n=2s, which implies the approximation 3.1416 which is correct to the last decimal place.
In, p. 245.
Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures

Ultimo aggiornamento 22 Maggio 2020. Storia
Aryabhata photo
Aryabhata
matematico, astronomo e astrologo indiano 476 - 550

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