The Rubik's cube box is unfolded skillfully, with seven knives on six sides.

Eleven kinds of pictures are clearly marked around fourteen pieces of side cloth.

Four sides and two sides form a line, and six kinds of figures are skillfully combined.

The running horse slipped and fell apart, and every two steps were staggered.

What is a cube?

A three-dimensional figure surrounded by six identical squares is called a cube. A straight parallelepiped with square sides and bottom is called a cube, that is, a hexahedron with equal sides, also known as a cube and a regular hexahedron. Cubes are special cuboids. Dynamic definition of cube: a three-dimensional figure obtained by translating the side length of a square in the direction perpendicular to the plane of the square.

Characteristics of cubes

1, a regular hexahedron has eight vertices, and each vertex has three sides connected.

2. A regular hexahedron has 12 sides, and each side has the same length.

A regular hexahedron has six faces, and each face has the same area and shape.

4. Diagonal line of regular hexahedron: where A is the side length.

Cubic surface area

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.

Cubic volume

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.