Dear teacher,
please explain which sentence is correct
1)She is of my age
2) She is of my height
3) she is of my age and height
or
4)She is my age.
5) she is my height.
6) she is my age and height.
please explain because it is confusing me a lot.
These sentences are of the type: Subject-Linking verb-Predicate adjective. The preposition of introduces a prepositional phrase, which you don't have here. Only 4,5 and 6 are standard English.