Yes, it can and it is.
4
27....
81 is einundachtzig in German.
quatre vingt-un
8 square cm
0.081
square
Cubes are prisms that have squares as bases and the height is the same as the edges. A square prism has square bases, top and bottom, and parallelograms as sides. A square pyramid has a square base and triangles for the vertical sides.
Three cubes.
Cubes of squares or squares of cubes, like 1, 64 and 729.
A rectangular prism.