He became Jonin at 6. refer to Kakashi Gaiden.When they became jonins = 13
I think after 3years the fox attacked the city = 16
then shippuden= after 16 years
=16 + 16 = 32
FAIL. Kakashi became Chunin when he was 6 and 13 when he turned jonin.He became Jonin at 6. refer to Kakashi Gaiden.
Anyway he's around 29.
Um no, it doesn't, or at least there is no evidence for it.sharingan gives you ability to remains youth.