30 should be the correct answer
Answer is in the pic above. Theorems used:
Exterior angle theorem
Inscribed angle theorem.

Answer:
11/4 or 2 3/4
Step-by-step explanation:
add numerators keep the same denominator
80ft! I might be wrong though
How I did it:
Since there are 5 floors (ground floor included) then that means only 1 floor is 24ft so I multiplied 14 by 4 to get 56 then I added 24 to get 80!