3.1 Cuboids and Cubes
A cuboid can described simply as a box with six sides

Examples of object in everyday life which have the form of a cuboid are milk boxes and bricks.

Cubes
A cube is a variant of a cuboid. In a cube all six sides have the same size.

An example of a cube can be a dice (where the corners are not rounded). 
Calculating Volume
You could say that the volume for a cube with a side of five centimeters is equivalent to 125 cubic centimeter sized cubes.
In total, its volume is 5 cm · 5 cm · 5 cm = 125 cm³ or
5 · 25 cm³ =
=
125 cm³
We can therefore say that a cuboids volume is:
Base area (B) = length (l) · width (w)
Example
A juice carton has the measurements as in the picture. Calculate the volume of the juice carton.
Volume (V) = Base Area (B) · height (h)
Base area =
7 cm · 7 cm = 49 cm^{2}
Volume =
49 cm^{2} · 20 cm = 980 cm^{3}
Answer:
V = 980 cm^{3} = 0.980 dm^{3} ≈ 1 liter 
Foto: Fredrik Enander 
