Hello – hola
(Pronounced oh-lah (NOTE: The "H" in hola is silent))
To remember that hello is pronounced oh-lah (hola) in Spanish, use the following mnemonic:
Hola rhymes with cola. Imagine saying hello to someone and pouring them a cola (hola) drink as a way of welcoming them.

Examples of hola (hello) in a sentence
Hola, ¿cómo estás?
(Hello, how are you?)
Hola a todos, me llamo Carlos.
(Hello everyone, my name is Carlos.)
Ella dijo hola y se fue.
(She said hello and left.)