Each small cube has a volume of 1 cm 3. The volume of the cuboid is 12 cm 3. The surface area of a 3D shape is the total area of all the faces. A cube has six faces which are all squares.

A 3D shape with a circular cross-section is a cylinder. A cylinder is not a prism because the circle is not a polygon. Image caption, The total surface area of a prism is made up of the areas of ...