Answer: 9,156.24 ft³
Explanation:
The formula for the volume of a cylinder is V = πr²h. The problem gives us both the radius and the height, so we have all necessary values to solve by substitution:
r = 9
h = 36
V = π(9)²×36
 = 81 × 36 × π
 = 2916π
 = 9,156.24 ft³