Greetings! Lets solve this shall we ?
So, we must find the length(height) of this rectangular stick using the given information such that the perimeter yields,
2l + 2w = P
2l + 2(9) = 44
2l + 18 = 44
2l = 26...........Then divide 2 such that
l = 13 centimeters
I hope this helped!