It depends on how it's used in a sentence. However, most of the time it is said that some one "HAS 30 years". A thing " Is of 30 years of age"
Tengo treinta años (I am 30 years old - I have 30 years)
El edificio es de treinta años de edad (the building is 30 years old - The building is of 30 years of age)
However in regular speech saying "something has 30 years" is acceptable.
Please be sure to use the ñ when writing año. Without the ~ you have a completely different word. No one wants to know that you have 30 anuses.
Mi madre tiene treinta años.
Tengo treinta años.
Ojalá tuviese 30 años menos
treinta años de amor fiel
J'ai trente ans.
30=treinta
A 30-year-old is more than 30 years old, but not yet 31 years old.
Spanish race driver Javier Villa is 30 years old (birthdate: October 5, 1987).
You would say "J'ai maintenant 30 ans" in French.
You have to be at least 30 years of age to be senator. You also have to be a citizen of at least 9 years, and reside in the state that you are elected from.
No, his 23 but some people say his 30 or 31.
Treintatreinta