Volume of a Cube Calculator

Published on: August 11, 2024

This Volume of a Cube Calculator helps you find the space inside a cube when the side length is known. It uses the formula V = a³, where a is the side length and the answer is written in cubic units. Multiply the side length by itself three times to get the volume. It is a simple way to check answers, understand the cube volume formula, and practise basic geometry step by step.
Cube labeled a
In the diagram, each edge is labeled a.

Step-by-step method

  1. Identify what is given.
  2. Write the formula.
  3. Substitute the value and calculate the volume.

Formula:

V = a³

Example 1: a = 4

Step 1 - Identify what is given.

In this problem: The given side length is a = 4.

a=4

Step 2 - Write the formula.

In this problem: Use the cube volume formula: V = a³.

V=

Step 3 - Substitute the value and calculate the volume.

In this problem: Substitute a = 4: V = 4³ = 64.

V==64

Final answer: V = 64

Example 2: a = 2.5

Step 1 - Identify what is given.

In this problem: The given side length is a = 2.5.

a=2.5

Step 2 - Write the formula.

In this problem: Use the cube volume formula: V = a³.

V=

Step 3 - Substitute the value and calculate the volume.

In this problem: Substitute a = 2.5: V = 2.5³ = 15.625.

V=2.5³=15.625

Final answer: V = 15.625