Volume of a cylinder = πr²h. Substitute r=8 and h=56: volume = 3.14 × 8 × 8 × 56 = 11253.76 cubic cm. 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 11253.76 cm³.