I'd guess she's about my age.
We're the same age.
She was 74 years of age when she wrote her first novel.
He left home at the age of 16.
The show appeals to people of all ages.
She is the same age as me. (Skills for Life (Entry 1); A1; Slovak)
the modern/information age
the ice age
You can begin by visiting its castle, which goes back to the middle ages. (First Certificate in English; B2; Portuguese)
He is starting to show his age.
The value of the painting has increased with age.
Usually, as the saying goes, we grow wiser with age. (Certificate of Proficiency in English; C2; French)
She first appeared on stage at the tender age of 12.
She met my father at the tender age of 14, and she soon knew that this was the man she wanted to stay with for the rest of her life. (Certificate of Proficiency in English; C2; Danish)