Mathematically, solid geometry is the traditional name of three-dimensional Euclidean space geometry-because in fact, this is roughly the space in which we live. Generally as a follow-up course of plane geometry. Stereo measurement involves volume measurement of different shapes: cylinder, cone, frustum, sphere, prism, wedge, bottle cap and so on.

Pythagoras School studied spheres and regular polyhedrons, but before Plato School began to study them, people knew little about pyramids, prisms, cones and cylinders. Eudoxus established their measuring method and proved that the volume of a cone is one third of that of a cylinder with equal bottom and equal height, and may be the first person to prove that the volume of a sphere is proportional to the cube of its radius.

I hope it can help you solve the problem.