Those two are, respectively, excessive and wrong. In the second case, age does not have an age; it makes no sense.
This doesn't mean people don't use them, especially if they have a mental image of a form with those words on them.
But it's seldom necessary even to say 'My age is N'; 'I am N' usually does the job, with context supplying the words 'years old'.
b
PS I've deleted the other copies of this question that you posted.






