A three-dimensional figure surrounded by six identical squares is called a regular hexahedron, also known as a cube or cube. A regular hexahedron is a straight parallelepiped with square sides and bottom, which is a hexahedron with equal sides.

A regular hexahedron is a special cuboid. The dynamic definition of a regular hexahedron is a three-dimensional figure obtained by translating the side length of a square in the direction perpendicular to the plane of the square.

Because all six faces of a regular hexahedron are equal squares, the surface area of the regular hexahedron, where A is the side length of the regular hexahedron and S is the surface area of the regular hexahedron.

Cube belongs to a kind of prism, and the volume formula of prism is also applicable, that is, volume = bottom area × height. Since all six faces of a regular hexahedron are equal squares, the volume of a regular hexahedron = side length × side length × side length.