Every three-dimensional body has volume. For example, a ball or pyramid are bodies with volume. The volume of a body is our way of measuring the space that said body occupies in space.

For example, let's observe acube whose length of each of its sides is$1\operatorname{cm}$, like this one:

To calculate the volume of the cube we will use the known formula:$Length\times ~width\times~height$

In this case, the three dimensions are equal and, therefore, we will note:

The function of volume units is to quantify or measure the volume of objects. Since it is a three-dimensional unit, these units are always expressed in cubic powers.

For example, cubic centimeter $\operatorname{cm}^3$ and cubic meter $\left(m^3\right)$. When referring to liquids, volume is usually measured in liters or gallons.

In this case, the calculation is quite simple. We will calculate the volume of the box by multiplying the three measurements together. The result is $120~cm^3$. It is crucial to highlight that, because we multiply cm by cm by cm three times, the result is given in $\operatorname{cm}^3$, that is, cubic cm (cm raised to the third power).

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That is, we found that $10,000~cm³$ are equivalent to $10$ liters.

Examples and exercises with solutions of volume units

Exercise #1

How many cm³ are there in a m³?

Video Solution

Answer

$1000000cm^3$

Exercise #2

Convert $6.8dm^3$ into milliliters.

Video Solution

Answer

$6800ml$

Exercise #3

How many milliliters are in a liter?

Video Solution

Answer

$1,000ml$

Exercise #4

What is 100 m³ written as cm³?

Video Solution

Answer

$100,000,000cm^3$

Exercise #5

143535 milliliters are? liters

Video Solution

Answer

$143.535l$

Review Questions

What are the units of volume?

As we have seen, everything that needs to be measured has its specific unit of measure. In the case of volume units, being a three-dimensional measure, that is, an object that has length, width, and height, its volume can be calculated. Therefore, we can measure it either in liters or milliliters, but if the objects have units of length, then the most common units in volume can be: $\operatorname{cm}^3$,$\operatorname{m}^3$,$\operatorname{dam}^3$,$\operatorname{hm}^3$,$\operatorname{dm}^3$,$\operatorname{mm}^3$, although it can also be measured in gallons and other volume units.

How are volume units written?

Being a unit of measure and as we said it is a three-dimensional unit, the measures are expressed to the third power, that is, as we have three dimensions length, width, and height, then suppose that its units are in $\operatorname{cm}$, then to calculate the volume it will be:

$\operatorname{cm}\times cm\times cm=cm^3$

If its lengths are $\operatorname{m}$, then the volume will be written in $\operatorname{m}^3$

What is the dimension of volume?

Being a dimension that is derived from length and by multiplying length, width, and height we will obtain a dimension to the cube. Or by making a conversion of volume units, that is, cubic, we can obtain an equivalence to liters, milliliters, or gallons.