Last updated on June 1st, 2025
When a number is multiplied by itself thrice, the resultant number is called the cube of a number. Cubing is used when comparing sizes of objects or things with cubic measurements. In this topic, we shall learn about the cube of 392.
A cube number is a value obtained by raising a number to the power of 3, or by multiplying the number by itself three times.
When you cube a positive number, the result is always positive.
When you cube a negative number, the result is always negative.
This is because a negative number multiplied by itself three times results in a negative number.
The cube of 392 can be written as 392³, which is the exponential form.
Or it can also be written in arithmetic form as 392 × 392 × 392.
In order to check whether a number is a cube number or not, we can use the following three methods: multiplication method, a factor formula (a³), or by using a calculator. These three methods will help kids cube the numbers faster and easier without feeling confused or stuck while evaluating the answers.
The multiplication method is a process in mathematics used to find the product of two numbers or quantities by combining them through repeated addition. It is a fundamental operation that forms the basis for more complex mathematical concepts.
Step 1: Write down the cube of the given number. 392³ = 392 × 392 × 392
Step 2: You get 60,349,888 as the answer. Hence, the cube of 392 is 60,349,888.
The formula (a + b)³ is a binomial formula for finding the cube of a number. The formula is expanded as a³ + 3a²b + 3ab² + b³.
Step 1: Split the number 392 into two parts. Let a = 390 and b = 2, so a + b = 392
Step 2: Now, apply the formula (a + b)³ = a³ + 3a²b + 3ab² + b³
Step 3: Calculate each term a³ = 390³ 3a²b = 3 × 390² × 2 3ab² = 3 × 390 × 2² b³ = 2³
Step 4: Add all the terms together: (a + b)³ = a³ + 3a²b + 3ab² + b³ (390 + 2)³ = 390³ + 3 × 390² × 2 + 3 × 390 × 2² + 2³ 392³ = 59,319,000 + 912,600 + 4,680 + 8 392³ = 60,349,888
Step 5: Hence, the cube of 392 is 60,349,888.
To find the cube of 392 using a calculator, input the number 392 and use the cube function (if available) or multiply 392 × 392 × 392. This operation calculates the value of 392³, resulting in 60,349,888. It’s a quick way to determine the cube without manual computation.
Step 1: Ensure the calculator is functioning properly.
Step 2: Press 3 followed by 9 and 2
Step 3: If the calculator has a cube function, press it to calculate 392³.
Step 4: If there is no cube function on the calculator, simply multiply 392 three times manually.
Step 5: The calculator will display 60,349,888.
There are some typical errors that kids might make during the process of cubing a number. Let us take a look at five of the major mistakes that kids might make:
What is the cube and cube root of 392?
The cube of 392 is 60,349,888, and the cube root of 392 is approximately 7.367.
First, let’s find the cube of 392.
We know that the cube of a number, such that x³ = y
Where x is the given number, and y is the cubed value of that number So, we get 392³ = 60,349,888
Next, we must find the cube root of 392
We know that the cube root of a number ‘x’, such that ∛x = y
Where ‘x’ is the given number, and y is the cube root value of the number So, we get ∛392 = 7.367
Hence the cube of 392 is 60,349,888, and the cube root of 392 is approximately 7.367.
If the side length of the cube is 392 cm, what is the volume?
The volume is 60,349,888 cm³.
Use the volume formula for a cube V = Side³.
Substitute 392 for the side length: V = 392³ = 60,349,888 cm³.
How much larger is 392³ than 390³?
392³ – 390³ = 1,030,888.
First find the cube of 392³, that is 60,349,888
Next, find the cube of 390³, which is 59,319,000
Now, find the difference between them using the subtraction method. 60,349,888 – 59,319,000 = 1,030,888
Therefore, 392³ is 1,030,888 larger than 390³.
If a cube with a side length of 392 cm is compared to a cube with a side length of 100 cm, how much larger is the volume of the larger cube?
The volume of the cube with a side length of 392 cm is 60,349,888 cm³.
To find its volume, we multiply the side length by itself three times (since it’s a 3-dimensional object).
Cubing 392 means multiplying 392 by itself three times: 392 × 392 = 153,664, and then 153,664 × 392 = 60,349,888.
The unit of volume is cubic centimeters (cm³), because we are calculating the space inside the cube.
Therefore, the volume of the cube is 60,349,888 cm³.
Estimate the cube 391.9 using the cube 392.
The cube of 391.9 is approximately 60,349,888.
First, identify the cube of 392,
The cube of 392 is 392³ = 60,349,888.
Since 391.9 is only a tiny bit less than 392, the cube of 391.9 will be almost the same as the cube of 392.
The cube of 391.9 is approximately 60,349,888 because the difference between 391.9 and 392 is very small.
So, we can approximate the value as 60,349,888.
Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.
: He loves to play the quiz with kids through algebra to make kids love it.