Answer:
1176.5 square feet
Step-by-step explanation-
Since fuel tank is a cylinder so we need to find the surface area of this cylinder.
Surface area of cylinder = 2. π. r. 2. +. 2. π.
Substituting the given values (h = 50, r = 7/2 = 3.5)in the above formula:
Surface area of fuel tank = 1176.5 square feet