How to use intersted in and concerned with ?
in the dictionary :
concerned (about/with something) : interested in something

are those sentences correct :
I am interested in swimming .
I am concerned with swimming .

Question

How to use intersted in and concerned with  ?
in the dictionary : 
concerned (about/with something) : interested in something

are those sentences  correct :
I am interested in swimming .
I am concerned with swimming .

Answer

The first sentence is correct but the second sentence does not make sense.