3.1 Cuboids and Cubes
A cuboid can described simply as a box with six sides
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Examples of object in everyday life which have the form of a cuboid are milk boxes and bricks.
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Cubes
A cube is a variant of a cuboid. In a cube all six sides have the same size.
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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 cm2
Volume =
49 cm2 · 20 cm = 980 cm3
Answer:
V = 980 cm3 = 0.980 dm3 ≈ 1 liter |

Foto: Fredrik Enander |
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