Answer: The answer is 452 cubic feet.
Step-by-step explanation: We are given to calculate the volume of a cylinder having a circular base of diameter 12 ft. and height 4 ft.
If 'r' be the radius of the base and 'h' be the height of the cylinder, then the volume of the cylinder is given by

Here, h = 4 ft and since the diameter of the base is 12 ft., so the radius will be

Therefore, the volume of the cylinder will be

Thus, the answer is 452 cubic feet.