How to Calculate the Volume of a Cube?

A block is a 3-layered shape with 6 equivalent sides, 6 countenances, and 6 vertices in the calculation. Each face of a shape is a square. In the 3 – aspects, the shape’s sides are; the length, width, and stature. Normal instances of shapes, in reality, incorporate square ice blocks, dice, sugar 3D shapes, meal, strong square tables, milk containers, and so on. In the above delineation, sides of a block are on the whole equivalent for example Length = Width = Height = a.

The volume of a strong 3D shape is how much space is involved by the strong 3D square. The volume is the distinction in space involved by the block and how much space is inside the 3D square for an empty solid shape.

The volume of a block is characterized as the absolute number of cubic units involved by the solid shape totally. A block is a three-layered strong figure, having 6 square faces. Volume is only the absolute space involved by an item. An article with a bigger volume would consume more space. Allow us to comprehend the volume of a shape exhaustively alongside the recipe and addressed models in the accompanying areas.

Volume of Cube

The volume of a shape is the complete three-layered space involved by a block. A 3D shape is a three-dimensional strong item with six square faces, having every one of the sides of a similar length. The block is otherwise called an ordinary hexahedron and is one of the five non-romantic strong shapes. The unit of volume of the shape is given as the (unit)³ or cubic units. The SI unit of volume is the cubic meter (m³), which is the volume involved by a shape with each side estimating 1m. The USCS units for volume are inches³, yards³, and so on.

Volume of Cube Formula

The volume of a block can be found by duplicating the edge length multiple times. For example, in the event that the length of an edge of a 3D shape is 4, the volume will be 4³. The recipe to ascertain the volume of a shape is given as,

Volume of a 3D square = a³

Where ‘a’ is the length of the side of the shape.

Volume of Cube Using Diagonal Formula

The volume of the block can likewise be found out straight by another recipe on the off chance that the askew is known.

The corner to corner of a 3D shape is given as, √3a.

Where, ‘a’ is the side length of the block. From this recipe, we can compose ‘a’ as, a = diagonal/√3.

In this way, the volume of a 3D shape condition using diagonal can, at last, be given as:

Volume of the 3D square = (√3 × d³)/9

Where d is the length of the corner to corner of the 3D shape.

Note: A typical error is to be kept away from by not befuddling the diagonal of a solid shape with the corner to corner of its face. The diagonal of a block slices through its middle, as displayed in the figure above. While the face diagonal is the corner to corner on each face of the block.

Volume of Cube Using Edge Length

The proportion of the multitude of sides of a solid shape is similar accordingly, we just need to know one side to ascertain the volume of the 3D square. The means to compute the volume of a shape utilizing the side length are,

1. Step 1: Note the estimation of the side length of the shape.
2. Step 2: Apply the equation to work out the volume using the side length: Volume of block = (side)³.
3. Step 3: Express the last response alongside the unit(cubic units) to address the acquired volume.

Volume of Cube Using Diagonal

Given the diagonal, we can follow the means provided beneath to track down the volume of a given 3D shape.

1. Step 1: Observe the measurement of the diagonal of the given cube.
2. Step 2: Apply the formula of volume using diagonal: [√3 × (diagonal)³]/9
3. Step 3: Express the obtained outcome in cubic units.

Sample Questions

Question 1: Calculate the volume of a 3D square with a side length of 2 inches.

Solution: 

The volume of a 3D square with a side length of 2 inches would have a volume of 3D square,

Volume = a³

(2 × 2 × 2) = 8 cubic inches.

Question 2: Calculate the volume of a shape with the diagonal estimating 2 inches.

Solution:  

Given, Diagonal = 2 inches

We know, Volume of shape = [√3 × (diagonal)³]/9

⇒ Volume = [√3 × (2)³]/9 

= [2 × 2  × 2  × √3 ]/9 

= 1.539 in³.

Question 3: The edge of a Rubik’s solid shape is 0.08 m. Track down the volume of the Rubik’s block?

Solution:  

Volume = a³

= (0.08 × 0.08 × 0.08) m³

= 2.16 × 10^{– 4} m³

Question 4: A cubical box of outer aspects 120 mm by 120 mm by 120 mm is open at the top. Assume the wooden box is made of 4 mm wood thick. Track down the volume of the 3D shape.

Solution: 

For this situation, deduct the thickness of the wooden box to get the elements of the 3D square.

Given, the shape is open at the top, 

Length = 120 – 4 × 2

= 120 – 8

= 112 mm.

Width = 120 – (4 × 2)

= 112 mm

Tallness = (120 – 4) mm (a solid shape is open at the top)

= 116 mm

Presently compute the volume.

Volume, V = (112 × 112 × 116) mm³

= 1455104 mm³.

Question 5: Cubical blocks of length 4 cm are stacked to such an extent that the stature, width, and length of the stack is 30 cm each. Track down the number of blocks in the stack.

Solution: 

To get the number of blocks in the stack, partition the stack’s volume by the block volume.

Volume of the stack = 30 × 30 × 30

= 27000 cm³

Volume of the block = 4 × 4 × 4

= 64 cm³

Number of block = 27000 cm³/64 cm³

= 422 cubes.

Question 6: The number of cubical boxes of aspects 2 cm × 2 cm × 2 cm can be stuffed in an enormous cubical instance of length 20 cm.

Solution: 

To observe the number of boxes that can be stuffed for the situation, partition the case’s volume by the volume of the case.

Volume of each container = (2 × 2 × 2) cm³

= 8 cm³

Volume of the cubical case = (20 × 20 × 20) cm³

= 8000 cm³

Number of boxes = 8000 cm³/8 cm³.

= 1000 boxes.

Question 7: Observe the volume of a metallic solid shape whose length is 40 mm.

Solution:

Volume of a solid shape = a³

= (40 × 40 × 40) mm³

= 64,000 mm³

= 6.4 × 10⁵ mm³

Question 8: The volume of a cubical strong plate is 0.7 in³. Track down the elements of the circle?

Solution: 

Volume of a 3D shape = a³

0.7 = a³

a = 3√0.7

a = 0.887 in.