Calculating the volume of different shapes is an important skill in Year 9 Mathematics. It helps us figure out how much space a solid takes up. Let’s look at some common shapes!

1. Cube: The formula is easy to remember. If one side is $s$, then the volume $V$ is: $V = s^3$ For example, if $s = 3$ cm, we can calculate $V$ like this: $V = 3^3 = 27 \text{ cm}^3$

2. Rectangular Prism: We use the length ($l$), width ($w$), and height ($h$) to find the volume: $V = l \times w \times h$ For example, if $l = 4$ cm, $w = 3$ cm, and $h = 2$ cm, then: $V = 4 \times 3 \times 2 = 24 \text{ cm}^3$

3. Cylinder: To find the volume, we use the radius ($r$) and the height ($h$): $V = \pi r^2 h$ For instance, if $r = 2$ cm and $h = 5$ cm, then: $V \approx 62.83 \text{ cm}^3$

By learning these formulas, you will be ready to solve volume problems with confidence!