Volume of a cylinder = πr²h. Substitute r=9 and h=57: volume = 3.14 × 9 × 9 × 57 = 14497.38 cubic m. Think of a cylinder as many equal circular layers stacked up. So we find the circular base area πr² and multiply by the height. The answer is in cubic units, so the correct choice is 14497.38 m³.