Three-dimensional (3D) shapes are solids described by their faces, edges and vertices.
A cube has 6 faces, 12 edges and 8 vertices. The volume of a cuboid is $\text{length} \times \text{width} \times \text{height}$. A flat net folds up to make a 3D shape.
Remember
- Cube: 6 faces, 12 edges, 8 vertices.
- Volume of a cuboid $= l \times w \times h$.