Calculate Cuboid Volume: 12cm Width with 40% Length and 30% Height Proportions

Volume Calculations with Percentage Dimensions

Given the cuboid whose width is 12 cm

Its length is equal to 40% of the width of the cuboid.

The height of the cuboid is equal to 30% of width

Calculate the volume of the cube

121212

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:12 Let's find the volume of the box.
00:15 First, check the width given in the data.
00:19 Now, look at the length. Convert any percentage to a number.
00:30 Great! This number is the box length.
00:37 Next, find the height. Again, convert any percentage to a number.
00:48 Awesome! This number is the box height.
00:51 Now, use the formula for volume.
00:55 Multiply width, height, and length together.
01:01 Substitute the values you found, and calculate the volume.
01:11 Well done! That's how we solve the problem.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Given the cuboid whose width is 12 cm

Its length is equal to 40% of the width of the cuboid.

The height of the cuboid is equal to 30% of width

Calculate the volume of the cube

121212

2

Step-by-step solution

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

  • Step 1: Identify the given information and calculate the length and height.

  • Step 2: Apply the formula for the volume of a cuboid.

  • Step 3: Perform the necessary calculations to find the volume.

Now, let's work through each step:

Step 1: Identify the given information and calculate the dimensions

We know the cuboid has a width of w=12 w = 12 cm. The length l l is stated to be 40% of this width. Thus, we calculate:
l=0.4×12=4.8 l = 0.4 \times 12 = 4.8 cm.

The height h h is 30% of the width, so:
h=0.3×12=3.6 h = 0.3 \times 12 = 3.6 cm.

Step 2: Apply the formula for the volume of a cuboid

The formula for the volume of a cuboid is given by V=l×w×h V = l \times w \times h .

Step 3: Calculate the volume

Now, substitute the values for l l , w w , and h h :
V=4.8×12×3.6=207.36 V = 4.8 \times 12 \times 3.6 = 207.36 cm³.

Therefore, the volume of the cuboid is 207.36 207.36 cm³.

3

Final Answer

207.36 cm³

Key Points to Remember

Essential concepts to master this topic
  • Formula: Volume of cuboid equals length × width × height
  • Technique: Convert percentages first: 40% of 12 = 4.8 cm
  • Check: Verify dimensions make sense: 4.8 × 12 × 3.6 = 207.36 cm³ ✓

Common Mistakes

Avoid these frequent errors
  • Using percentages directly in volume formula
    Don't use 40% and 30% as actual measurements = impossible negative or decimal volume! Percentages must be converted to actual measurements first. Always calculate the actual dimensions: 40% of 12 = 4.8 cm and 30% of 12 = 3.6 cm before finding volume.

Practice Quiz

Test your knowledge with interactive questions

Calculate the volume of the rectangular prism below using the data provided.

888333222

FAQ

Everything you need to know about this question

How do I convert percentages to actual measurements?

+

To convert a percentage to actual measurement: multiply the percentage (as a decimal) by the reference value. For example: 40% of 12 cm = 0.4 × 12 = 4.8 cm.

Why can't I just multiply 12 × 40 × 30?

+

Because 40 and 30 are percentages, not actual measurements! You need the actual dimensions in centimeters: length = 4.8 cm, height = 3.6 cm, then multiply 4.8 × 12 × 3.6.

What does 'cuboid' mean compared to 'cube'?

+

A cuboid is a rectangular box where all sides can be different lengths. A cube has all sides equal. This problem uses 'cuboid' correctly since the dimensions are different.

How do I remember the volume formula?

+

Think of filling a box: you need to know how long, how wide, and how tall it is. Volume = length × width × height tells you how many unit cubes fit inside!

What units should my final answer have?

+

Since all dimensions are in centimeters (cm), the volume will be in cubic centimeters (cm³). Always cube the unit when finding volume!

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Cuboids questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations