
1)
What is volume ?
The volume
corresponds to the space occupied by an object or substance (solid,
liquid or gaseous).
The
volume can be calculated for simple geometric shapes such as
 Cubes: Volume = side x side x side
 Parallelepiped: Volume = length x width x height
as well as spheres, cones, pyramids etc..
For objects
of more complex shapes, we must make measurements to determine the
volume
2)
Units of volum: cubic meter
The standard
unif of volume is the cubic meter ( symbol m^{3 } ).
A cubic meter corresponds to the space occupied by a cube of side 1 m.
L'unité de volume du système international est le
mètre cube de symbole m^{3 }
Un
mètre cube correspond à l'espace qu'occupe un
cube de 1 m de coté.
The volume can also be expressed using multiples of the cubic meter:
 The cubic decameter (dam^{3})
 The cubic hectometer (hm^{3})
 The cubic kilometers (km^{3})
Or using submultiples of the cubic meter:
 The cubic decimeter (dm^{3})
 The cubic centimeter (cm^{3})
 The cubic millimeter (mm^{3})
Each unit is
a thousand times greater than the previous one:
1 cubic centimeter is equal to 1000 cubic millimeter.
1 cubic decimeter is equal to 1000 cubic centimeter.
1 cubic meter is equal to 1000 cubic decimeter.
etc.
Each quantity expressed in one of these units can also be expressed in
any of the other. This change of units can be achieved using a
conversion table:
km^{3} 
hm^{3} 
dam^{3} 
m^{3} 
dm^{3} 
cm^{3} 
mm^{3} 





















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3) Units
of volum: litre
For
liquids and gases, it is common practice to use as unit volume litre
(L) and its derived units:
 Millilitre (mL)
 Centilitre (cL)
 Decilitre (dL)
 Decalitre (dal)
 Hectolitre (hl)
 Kilolitre (kL)
Each of
these units is ten times greater than the previous one:
1 centilitre is equal to 10 ten millilitre.
1 deciliter is equal to 10 centilitre.
A litre is equal to 10 decilitre.
etc.
Each volume
expressed in one of these units can be converted to another unit using
the following conversion table:
4)
Cubic meter and litre
A litre is a
unit that was defined as being equal to one cubic decimeter:
1 L = 1 dm^{3}
Therefore we
have also the following equality:
1 mL = 1 cm^{3}
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