¿Hola: Hello!
in English, it sounds like ‘O-la’, with a silent ‘H’
¿Que tal?: How are you?
¿Que?: What?
“¿Que?” would be voiced as “keh” in English.
Cómo estás?: How are you?
Cómo estás is our literal translation of how are you: cómo is the Spanish question word meaning how, while estás means are you (or you are) .
Both ¿Que tal? and Cómo estás? have the same meaning as How are you?. Cómo estás is more formal than the former.
¿Hola! Cómo estás? : Hi! How are you?
¿Hola! ¿Que tal? : Hi! How areyou?