A column belongs to a column, which can be obtained according to the column volume formula "column volume = column bottom area× column height", and the column volume formula is "column volume = column bottom area× column height".

The volume of the cylinder is equal to the product of the bottom area of the cylinder and the height of the cylinder, that is, "the volume of the cylinder = the bottom area of the cylinder × the height of the cylinder". Cylinders can be divided into prisms and cylinders. Cylinders and prisms are collectively called cylinders.