Were Ashoka and Eratosthenes alive at the same time?
Yes. Ashoka and Eratosthenes were alive at the same time for 43 or 44 years, from 276 BC to 232 BC.
Eratosthenes was 43 or 44 when Ashoka died.
Eratosthenes
Greek mathematician, geographer, poet, astronomer, librarian and music theorist
Born 276 BC · died 194 BC