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Formula Of Volume Of A Cuboid With Explanation

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What Is The Formula Of Volume Of A Cuboid And How To Use It In Problems

The quantity that is used to calculate how much space there is inside a cuboid is called its volume. A cuboid is a common three-dimensional shape that surrounds us that is a room. Based on a shape's parameters, such as its length, breadth, and height, the term "volume" is used to describe how much space of that shape is contained. A formula particular to a cuboid's shape will be used to determine the volume of a cuboid.


What is the Formula for the Volume of a Cuboid?

In general, the volume of a cuboid is equal to the area that it takes up in space. It is dependent upon the cuboid's three dimensions, or its length, breadth, and height. All of the angles and the opposite faces of a cuboid in a rectangular cuboid are at right angles. Because the cuboid's volume depends on its length, breadth, and height, changing any one of those measurements alters the volume of the shape. Cuboid's volume is expressed as the \[{(unit)^3}\].


The idea described on rectangular sheets can be used to get the formula for the cuboid's volume. Let A stand for the area of a rectangular piece of paper, h for the height at which they are stacked, and V for the cuboid's volume. The cuboid's volume is then calculated by multiplying its base area by its height.

Cuboid volume equals base area minus height.

The cuboid's base area is equal to \[l \times b\].

Consequently, a cuboid's volume is given by \[V = l \times b \times h\].

Cuboid

Cuboid


Volume of Cuboid Formula

A cuboid's volume is determined by the product of its length, breadth, and height. Cubic units, often known as \[{(unit)^3}\], include \[{m^3},c{m^3}\], etc. as the unit of volume for cuboids.

The product of a cuboid's base area and height determines its volume. We can therefore write:

Cuboid volume equals base area times height (in cubic units).

The cuboid's base is shaped like a rectangle. As a result, a cuboid's base area is determined by multiplying its length by its breadth. Hence, A cuboid's volume is equal to the multiplication of length, breadth, and height in cubic units.


How to Find Volume of Cuboid

Using the cuboid volume formula, the volume of the cuboid can be determined. To determine a cuboid's volume, follow these steps:

Step 1: Verify whether or not the cuboids' specified dimensions are in the same units. In that case, if the units are not the same, then change the dimensions to match the units.

Step 2: Multiply the cuboid's length, breadth, and height once the dimensions are all expressed in the same units.

Step 3: After you've calculated the value, write the unit at the end.


Conclusion

A cuboid's volume is the amount of space it occupies in three dimensions. A cuboid is a three-dimensional shape having six rectangular faces. Two pairs of three parallel faces make up each of these six cuboid faces. The volume of a cuboid is measured in cubic units.


The Volume of Cuboid Examples

Example 1: Calculate the volume of a cuboid with dimensions of 7 inches long, 5 inches wide, and 2 inches high.

Ans: As is well known, \[V = l \times b \times h\] for a cuboid's volume.

Here, the dimensions are as follows: \[l = 7 inches, b = 5inches, h = 2 inches\].

The volume of the cuboid is therefore \[V = l \times b \times h\].

\[V = 7 \times 5 \times 2\]

\[V = 70\, inche{s^3}\]

The cuboid has a volume of \[70\,inche{s^3}\].


Example 2: If a cuboidal fish aquarium has the following measurements: 30 inches, 20 inches, and 15 inches. Can you estimate the size of the fish tank?


Fish Aquarium


Fish Aquarium


Ans: The fish aquarium is, as we all know, shaped like a cube. Consequently, the fish tank's measurements are as follows:

The aquarium is 30 inches long.

The aquarium is 20 inches wide.

The aquarium is 15 inches tall.

The aquarium's volume is calculated as follows:

\[V = l \times b \times h\]

\[V = 30 \times 20 \times 15\]

\[V = 9000\]

The cuboidal fish tank has a \[9000\, inc{h^3}\] volume.


Example 3: Determine how much air may be accumulated in a space that is 5 inches long, 6 inches wide, and 10 inches high.

Ans: Capacity of a room = volume of a cuboid = maximum amount of air that can be gathered in space.

\[\begin{array}{l}V = 5 \times 6 \times 10\\V = 300\\V = 300 inc{h^3}\end{array}\]

Thus, this space can hold up to \[300 inc{h^3}\] of air at a time.

FAQs on Formula Of Volume Of A Cuboid With Explanation

1. What is the formula of volume of a cuboid?

The formula of volume of a cuboid is V = l × b × h, where l is length, b is breadth, and h is height.

  • Multiply the three dimensions together.
  • Ensure all measurements are in the same unit.
  • The result is expressed in cubic units such as cm³ or m³.
This formula calculates the total space occupied by a cuboid.

2. How do you calculate the volume of a cuboid step by step?

To calculate the volume of a cuboid, use the formula V = l × b × h.

  • Step 1: Measure the length (l).
  • Step 2: Measure the breadth (b).
  • Step 3: Measure the height (h).
  • Step 4: Multiply all three values.
For example, if l = 5 cm, b = 4 cm, and h = 3 cm, then V = 5 × 4 × 3 = 60 cm³.

3. What is the volume of a cuboid with given dimensions?

The volume of a cuboid is found by multiplying its three dimensions using V = l × b × h.

  • If l = 8 m, b = 2 m, h = 5 m
  • Volume = 8 × 2 × 5
  • Volume = 80 m³
The result represents the total space inside the cuboid.

4. What are the units of volume of a cuboid?

The units of volume of a cuboid are always cubic units.

  • If dimensions are in centimeters, volume is in cm³.
  • If dimensions are in meters, volume is in .
  • If dimensions are in inches, volume is in in³.
Volume measures three-dimensional space, so units are cubed.

5. Why is the volume of a cuboid length × breadth × height?

The volume of a cuboid is length × breadth × height because it equals the area of the base multiplied by the height.

  • Base area = l × b
  • Volume = base area × h
  • So, V = l × b × h
This works because a cuboid is a three-dimensional rectangular solid.

6. What is the difference between area and volume of a cuboid?

The area measures surface coverage, while the volume measures space occupied.

  • Area is measured in square units (cm², m²).
  • Volume is measured in cubic units (cm³, m³).
  • Volume formula: V = l × b × h.
Area is two-dimensional, but volume is three-dimensional.

7. Can you give a real-life example of volume of a cuboid?

A real-life example of cuboid volume is calculating the capacity of a rectangular box or water tank using V = l × b × h.

  • If a box measures 10 cm × 6 cm × 4 cm
  • Volume = 10 × 6 × 4
  • Volume = 240 cm³
This tells us how much material or liquid the box can hold.

8. How do you find the height of a cuboid if volume is given?

To find the height of a cuboid, use the rearranged formula h = V ÷ (l × b).

  • Step 1: Multiply length and breadth.
  • Step 2: Divide the volume by the result.
For example, if V = 120 cm³, l = 5 cm, b = 4 cm, then h = 120 ÷ (5 × 4) = 120 ÷ 20 = 6 cm.

9. Is a cube a special type of cuboid in terms of volume?

Yes, a cube is a special type of cuboid where all sides are equal, and its volume formula is V = a³.

  • In a cuboid: V = l × b × h
  • In a cube: l = b = h = a
  • So, V = a × a × a = a³
Every cube is a cuboid, but not every cuboid is a cube.

10. What are common mistakes when finding the volume of a cuboid?

Common mistakes when finding the volume of a cuboid include incorrect multiplication or wrong units.

  • Not converting all dimensions into the same unit.
  • Forgetting to cube the unit in the final answer.
  • Adding instead of multiplying dimensions.
Always apply the correct formula V = l × b × h and express the result in cubic units.