Analysis:? The volume of each small cube is/kloc-0 /×/kloc-0 /×1=1(cm3). This cube figure consists of seven such cubes, and its volume is 1×7=7 (cubic centimeters) (it can also be regarded as the volume of a cube with a side length of 2 centimeters minus 1).

For a cube with a length of 2 cm, remove the small cube with a vertex length of 1 cm, remove the area of three squares with a length of 1 cm, and add the area of the same three squares with a length of 1 cm, and the surface area remains unchanged.

According to the surface area formula "S=6a2" of a cube, its surface area can be calculated.

A regular hexahedron has the following characteristics:

A regular hexahedron has eight vertices, and each vertex is connected by three sides.

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

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

4. Diagonal line of a regular hexahedron: √3a, where a is the side length.