>
|
|
For the standard cube
| (1) |
the edges of the cube all have length 2
>
|
|
| (2) |
the cube has a volume of 8
and the total surface area of the cube is
The polyhedral set ps is a three-dimensional polytope in four-dimensional space.
>
|
|
| (5) |
Its four-dimensional volume is 0, but its three-dimensional volume is positive.