<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> <Ul> <Li> Scholar </Li> <Li> Librarian </Li> <Li> Poet </Li> <Li> Inventor </Li> </Ul>

Who first measured the circumference of the earth