Answer:
11 ft
Step-by-step explanation:
The midsegment is 1/2 of the top and bottom segments
1/2(8+14)
1/2(22) = 11
y=(x+kh)1/h
(y-k)h=c
hy-kh=c
hy=x+kh
shortest-7
middle-24
longest-25