a cube
A cuboid.
A butt
It is a cuboid. It is a cuboid.
A cuboid.
Cuboid
cube
There is no form of a hexahedron whose name starts with a d.However, an octagonal prism has 6 (and more) faces, some of the are rectangles and it is a from of a decahedron.
A cuboid fits the description given
Hexagonal Prism.
Cuboid
Octagonal Prism
A hexagonal prism.