## What is volume?

**Volume**is the amount of 3-dimensional space an object occupies. Volume is measured in cubic units.

For example, the rectangular prism below has a volume of $18$ cubic units because it is made up of $18$ unit cubes.

*Want to learn more about the concept of volume? Check out this video.*

## Finding volume of a rectangular prism

To find the volume of a rectangular prism, we multiply the length of the prism by the width of the prism by the height of the prism.

$\text{Volume of rectangular prism}=$ $\text{length}\times\text{width}\times\text{height}$

*Want to learn more about finding volume of rectangular prisms? Check out this video.*

### Example 1:

$\text{Volume}=\text{length}\times\text{width}\times\text{height}$

$\phantom{\text{Volume}}=3\times2\times3$

$\phantom{\text{Volume}}=18\text{ cubic units}$

$\phantom{\text{Volume}}=3\times2\times3$

$\phantom{\text{Volume}}=18\text{ cubic units}$

### Example 2:

$\text{Volume}=\text{length}\times\text{width}\times\text{height}$

$\phantom{\text{Volume}}=6\times5\times7$

$\phantom{\text{Volume}}=210\text{ cubic units}$

$\phantom{\text{Volume}}=6\times5\times7$

$\phantom{\text{Volume}}=210\text{ cubic units}$

## Practice set 1: Finding volume by multiplying

*Want to try more problems like this? Check out this exercise:*Volume 1

## Practice set 2: Finding volume with unit cubes

*Want to try more problems like this? Check out these exercises:*

Volume with unit cubes 1

Volume formula intuition

## Practice set 3: Challenge items

*Want to try more problems like this? Check out these exercises:*

Decompose figures to find volume

Volume word problems