

Cent as sent + taur as tor. We pronounce most greek c’s as s in english as is cicero or cent being pronounced with an s sound instead of a k sound. Tor is the same as in taurus. Mine is not the only correct pronunciation, my explanation is just the justification for my specific pronunciation
Back in his day, yes. In modern greek it is sisero and in modern latin it is Chichero. Similarly, in Julius Caesar’s day, his name would have been pronounced Kai-zar and in modern latin and italian, it is Chai-zar.