When he was a young man Apollonius went to Alexandria where he studied under the followers of Euclid and later he taught there. Apollonius visited Pergamum where a university and library similar to Alexandria had been built.

Who was Archimedes and what did he do?

Archimedes, (born c. 287 bce, Syracuse, Sicily [Italy]—died 212/211 bce, Syracuse), the most famous mathematician and inventor in ancient Greece. Archimedes is especially important for his discovery of the relation between the surface and volume of a sphere and its circumscribing cylinder.

Where is Apollonius?

A wandering philosopher, probably representing Apollonius of Tyana, who lived a part of his life in Crete and died there. Found in Gortyn (late 2nd century AD), now in Heraklion Archaeological Museum, Crete.