<Table> <Tr> <Th_colspan="2"> Eratosthenes </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> </Th> <Td> 276 BC Cyrene </Td> </Tr> <Tr> <Th> </Th> <Td> 194 BC Alexandria </Td> </Tr> <Tr> <Th> Occupation </Th> <Td> <Ul> <Li> Scholar </Li> <Li> Librarian </Li> <Li> Poet </Li> <Li> Inventor </Li> </Ul> </Td> </Tr> <Tr> <Th> Known for </Th> <Td> <P> Sieve of Eratosthenes </P> Foundation of Geography </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Eratosthenes </Th> </Tr>

Who figured out the circumference of the earth