For a cylinder and a cone, the circumference of the bottom area of the cylinder is one third of that of the cone, the height of the cylinder is five sixths of that of the cone, and the volume of the cylinder is a fraction of that of the cone

For a cylinder and a cone, the circumference of the bottom area of the cylinder is one third of that of the cone, the height of the cylinder is five sixths of that of the cone, and the volume of the cylinder is a fraction of that of the cone

From the ratio of perimeter to ground radius is 1:3, then the ratio of bottom area is 1:3, the ratio of height is 5:6, and the volume ratio is π 1 × 1 × 5: (1 / 3) π 3 × 3 × 6 = 5:18