Answer:
8 ft
Explanation:
if the far-left vertical side is 14 ft, and you were to cut off the blue shaded part, the other side should be 14 ft as well. the is one other vertical part of the shape, and it's 6 ft long, and is parallel to the 14 ft side, which means that it is a fraction of the length of 14 ft, so subtract 6 from 14, and you'll get 8 ft.