For an iron machine part, the upper part is conical and the lower part is cylindrical. The area of the bottom is equal. The height of the cone is twice that of the cylinder. The volume of the cone is known to be 9.42 cubic decimeters. The total weight of the part can be calculated. (iron weight per cubic decimeter is 7.8kg)

For an iron machine part, the upper part is conical and the lower part is cylindrical. The area of the bottom is equal. The height of the cone is twice that of the cylinder. The volume of the cone is known to be 9.42 cubic decimeters. The total weight of the part can be calculated. (iron weight per cubic decimeter is 7.8kg)

Because the ground area is the same, the cone height is twice that of the cylinder. Cone volume = (1 / 3) x bottom area X cone height = (1 / 3) x bottom area x 2 x cylinder height cylinder volume = bottom area X cylinder height cone volume 9.42dm? Cylinder volume = (3 / 2) x cone volume = 14.13dm? Total weight = Volume X density = (9