Calculate Cuboid Volume: Finding Space in 8cm × 2cm × 4cm Box

Cuboid Volume with Three-Dimensional Measurements

Below is a cuboid with a length of

8 cm.

Its width is 2 cm and its height is

4 cm.

Calculate the volume of the cube.

222888444

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:09 Let's find the volume of the box.
00:12 We'll use a simple formula to calculate it.
00:16 Just multiply the width, the height, and the length.
00:21 Now, plug in the values and solve for the volume.
00:38 Great job! That's how we solve it.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Below is a cuboid with a length of

8 cm.

Its width is 2 cm and its height is

4 cm.

Calculate the volume of the cube.

222888444

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the given information
  • Step 2: Apply the appropriate formula for volume
  • Step 3: Perform the necessary calculations

Now, let's work through each step:

Step 1: The problem gives us the dimensions of a cuboid: length L=8cm L = 8 \, \text{cm} , width W=2cm W = 2 \, \text{cm} , and height H=4cm H = 4 \, \text{cm} .

Step 2: We'll use the formula to calculate the volume of a cuboid: V=L×W×H V = L \times W \times H .

Step 3: Substitute the given dimensions into the formula: V=8×2×4 V = 8 \times 2 \times 4 Calculate the result: V=16×4=64 V = 16 \times 4 = 64 Thus, the volume of the cuboid is 64cm3 64 \, \text{cm}^3 .

Therefore, the solution to the problem is 64cm3 64 \, \text{cm}^3 .

3

Final Answer

64 cm³

Key Points to Remember

Essential concepts to master this topic
  • Formula: Volume equals length times width times height
  • Technique: V = 8 × 2 × 4 = 64 cm³
  • Check: Units must be cubic (cm³) and all dimensions multiplied ✓

Common Mistakes

Avoid these frequent errors
  • Adding dimensions instead of multiplying
    Don't add 8 + 2 + 4 = 14 cm³! This gives a linear measurement, not volume. Volume measures space inside, requiring all three dimensions to be multiplied. Always use V = L × W × H for cuboids.

Practice Quiz

Test your knowledge with interactive questions

A rectangular prism has a base measuring 5 units by 8 units.

The height of the prism is 12 units.

Calculate its volume.

121212888555

FAQ

Everything you need to know about this question

Why do we multiply all three dimensions?

+

Volume measures the total space inside a 3D shape. Think of it as stacking unit cubes - you need length × width layers, each 4 cm high, so 8 × 2 × 4 = 64 unit cubes fit inside!

What's the difference between area and volume?

+

Area is flat (2D) and measured in cm². Volume is space (3D) and measured in cm³. Area uses 2 dimensions, volume uses all 3 dimensions.

Does the order of multiplication matter?

+

No! You can multiply in any order: 8 × 2 × 4, 4 × 8 × 2, or 2 × 4 × 8 all give the same answer. Multiplication is commutative.

Why are the units cm³ instead of just cm?

+

The ³ (cubed) shows we multiplied 3 dimensions together. Each dimension is in cm, so cm × cm × cm = cm³. This tells us we're measuring volume, not length!

How can I remember the volume formula?

+

Think "Length × Width × Height" or imagine filling a box with unit cubes. You need to know how many cubes fit in each direction, then multiply them all together!

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