Answer:
7.4
Explanation:
The information given is in from SAS.
This is a job for law of cosines.
This is the law of cosines

The angle A is opposite side a and b,c are the other sides.
So 13 degrees is opposite the y there.

Now I'm going to put 16^2+22^2-2*16*22*cos(13) in my calculator:

Now one more step. To get rid of the square, you need to square root both sides:

Sp the answer is approximately 7.4