Each of the small cubes in this shape has a volume of 1 cm3. The volume of the cuboid is 12 cm3.
It can be calculated by counting the cubes inside or by multiplying the length, width and height together.
The surface area of a cuboid can be calculated by adding together the areas of the six faces. The opposite faces of a cuboid are the same sized rectangles, so find the total area of the three different faces, then double to find the total surface area.
Find the surface area of a cuboid of length 4 cm, width 2 cm and height 3cm.
The three different faces of the cuboid are labelled A, B and C
Area of A =
Area of B =
Area of C =
The area of the three faces is . The total surface area is therefore .