Answer:
14 ft. and 1 in. (14' 1")
Step-by-step explanation:
First, you add all of the feet together.
3 + 5 + 4 = 12 ft.
Next, add all of the inches.
5 + 11 + 9 = 25 in.
Because 12 inches is equal to 1 foot, we need to divide 12 into 25, which gives us 2 ft. and 1 in.
But that's not all. Lastly, you need to put everything together.
12 + 2 = 14 ft, and 1 in.
Hope this helps.