To find the volume of a cube, you just need the length of one side. Once you know that, you cube it: multiply the side by itself three times.

Basic formula

For a cube with side length sss:

V=s3V=s^3V=s3

  • If the side is 2 cm, V=23=8V=2^3=8V=23=8 cubic centimeters.
  • If the side is 5 m, V=53=125V=5^3=125V=53=125 cubic meters.

Always write the unit as a cubic unit (cm³, m³, in³, etc.).

Quick Scoop (step-by-step)

  1. Measure one edge of the cube (they’re all the same length).
  2. Multiply that number by itself three times: side × side × side.
  3. Attach “cubic” units to your answer.

Example: A cube-shaped box has edge 4 cm.
V=4×4×4=64V=4\times 4\times 4=64V=4×4×4=64 cm³.

Why this works (mini story)

Imagine filling the cube with tiny 1-by-1-by-1 unit cubes.

  • Along the length, you can fit sss of them.
  • Along the width, another sss.
  • Along the height, again sss.

So total tiny cubes: s×s×s=s3s\times s\times s=s^3s×s×s=s3, which is exactly the volume.

HTML table (for your post)

Here’s a small HTML table you can embed:

html

<table>
  <tr>
    <th>Side length (s)</th>
    <th>Volume formula</th>
    <th>Volume</th>
  </tr>
  <tr>
    <td>2 cm</td>
    <td>s³</td>
    <td>2³ = 8 cm³</td>
  </tr>
  <tr>
    <td>3 cm</td>
    <td>s³</td>
    <td>3³ = 27 cm³</td>
  </tr>
  <tr>
    <td>4 cm</td>
    <td>s³</td>
    <td>4³ = 64 cm³</td>
  </tr>
</table>

TL;DR

  • Formula: V=s3V=s^3V=s3
  • Steps: measure side → cube it → add cubic units.