Answer:16.
Step-by-step explanation: We will call the length of the shorter piece x.
The other side will now be 22 - x.
One piece is 4 cm longer than twice the length of the shorter piece, so 4 + 2x.
Then we have: 22 - x = 2x + 4.
Now just solve for x!
22 - x = 2x + 4
18 = 3x
6 = x, which is the shorter piece.
As before, 22 - x is the longer piece, and since we have x, just plug in for x.
22 - 6 = 16.