Question: what is the formula to find the weight of a cylinder?
Answer: The volume of a cylinder is the square of its radius times pi times the height. So the volume of your empty cylinder is (22)(pi)(4) - (1.52)(pi)(4). This is about 22 cubic feet. If your cylinder was made of concrete, which is typically about 144 lbs per cubic foot, then it would weigh 22 x 144 = 3168 lbs.