Number of parts that a n-planes ring torus can be cut

Description

In geometry, a torus (pl. tori) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis coplanar with the circle. If the axis of revolution does not touch the circle, the surface has a ring shape and is called a ring torus. A standard torus (specifically, a ring torus) can be cut into a number of parts depended on the number of the planes.