# Regular Hexahedron or Cube

A cube or regular hexahedron is a regular polyhedron composed of 6 equal squares.

### Unfold of a Cube

### Characteristics of a Cube

**Number of faces: 6**.

**Number of vertices: 8.**

**Number of edges: 12**.

**Number of concurrent edges at a vertex: 3**.

### Surface Area of a Cube

### Volume of a Cube

### Diagonal of a Cube

#### Example

Calculate the diagonal, the lateral area, suface area and volume of a cube with an edge of 5 cm.

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