Do you mean "how many faces are on the shape cube?" If you did, then the answer is 6.
It depends on the shape it is.
The faces of a cube are all the same shape - a square.
It depends how many sides or faces the shape has.
Depends. What shape is it?
12 of them.
12, surely.
Cuboid
one
There are many. All polyhedra have ONLY flat faces but many other shapes have flat faces such as a hemisphere or an octant or a cylinder.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
Two. 4 faces are triangles and the base is a square.