A rectangular prism, it has 6 rectangular faces.
There are two 3D shapes with five faces: Triangular prisms and rectangular pyramids.
a rectangular prism
A cuboid.
A rectangular prism is the only shape that is made up from only rectangular faces. But there are countless shapes which contain rectangular faces along with other shapes.
No 3D shape with FLAT SIDES has exactly 3 faces. 4 is the minimum.
A rectangular tube.
rectangular prism
a cube
Yes, and three rectangular faces.
the other faces on a pentagonal prism would be rectangular
rectangular prism