123 LearnersLast updated on May 26th, 2025
Square Root of 1392
If a number is multiplied by the same number, the result is a square. The inverse of the square is a square root. The square root is used in fields like vehicle design, finance, etc. Here, we will discuss the square root of 1392.
What is the Square Root of 1392?
The square root is the inverse of the square of a number. 1392 is not a perfect square. The square root of 1392 is expressed in both radical and exponential form. In the radical form, it is expressed as √1392, whereas (1392)^(1/2) in the exponential form. √1392 ≈ 37.282, which is an irrational number because it cannot be expressed in the form of p/q, where p and q are integers and q ≠ 0.
Finding the Square Root of 1392
The prime factorization method is used for perfect square numbers. However, the prime factorization method is not used for non-perfect square numbers where long-division method and approximation method are used. Let us now learn the following methods:
- Prime factorization method
- Long division method
- Approximation method
Square Root of 1392 by Prime Factorization Method
The product of prime factors is the prime factorization of a number. Now let us look at how 1392 is broken down into its prime factors.
Step 1: Finding the prime factors of 1392.
Breaking it down, we get 2 x 2 x 2 x 2 x 3 x 29: 2^4 x 3^1 x 29^1.
Step 2: Now we found out the prime factors of 1392. The second step is to make pairs of those prime factors. Since 1392 is not a perfect square, therefore the digits of the number can’t be grouped in pairs completely. Therefore, calculating 1392 using prime factorization is not straightforward.
Square Root of 1392 by Long Division Method
The long division method is particularly used for non-perfect square numbers. Let us now learn how to find the square root using the long division method, step by step.
Step 1: To begin with, we need to group the numbers from right to left. In the case of 1392, we need to group it as 92 and 13.
Step 2: Now we need to find n whose square is 13. We can say n as ‘3’ because 3 x 3 = 9, which is less than 13. Now the quotient is 3, after subtracting 9 from 13, the remainder is 4.
Step 3: Now let us bring down 92, forming a new dividend of 492. Add the old divisor with the same number 3 + 3 = 6, which will be our new divisor.
Step 4: The new divisor will be the sum of the dividend and quotient. Now we get 6n as the new divisor, we need to find the value of n.
Step 5: The next step is finding 6n × n ≤ 492. Let us consider n as 8, now 68 x 8 = 544, which is too large.
Step 6: Try n as 7, so 67 x 7 = 469.
Step 7: Subtract 469 from 492, the difference is 23, and the quotient is 37.
Step 8: Since the dividend is less than the divisor, we need to add a decimal point. Adding the decimal point allows us to add two zeroes to the dividend. Now the new dividend is 2300.
Step 9: We need to find the new divisor, using 746 x 3 = 2238.
Step 10: Subtract 2238 from 2300, and we get 62.
Step 11: The current quotient is 37.3.
Step 12: Continue doing these steps until we get two numbers after the decimal point. Suppose if there is no decimal, continue till the remainder is zero.
So the square root of √1392 is approximately 37.28.
Square Root of 1392 by Approximation Method
Approximation method is another method for finding the square roots, it is an easy method to find the square root of a given number. Now let us learn how to find the square root of 1392 using the approximation method.
Step 1: Now we have to find the closest perfect square of √1392. The smallest perfect square less than 1392 is 1369 (37^2), and the largest perfect square greater than 1392 is 1444 (38^2). √1392 falls somewhere between 37 and 38.
Step 2: Now we need to apply the formula: (Given number - smallest perfect square) / (Greater perfect square - smallest perfect square). Going by the formula (1392 - 1369) ÷ (1444 - 1369) = 23 / 75 ≈ 0.3067. Using the formula, we identified the decimal point of our square root. The next step is adding the value we got initially to the decimal number which is 37 + 0.3067 ≈ 37.31, so the square root of 1392 is approximately 37.31.
Common Mistakes and How to Avoid Them in the Square Root of 1392
Students often make mistakes while finding the square root, such as forgetting about the negative square root, and skipping long division methods. Now let us look at a few of those mistakes that students tend to make in detail.
Mistake 1
Forgetting about the negative square root
It is important to make students aware that a number does have both positive and negative square roots. However, we will be taking only the positive square root, as it is the required one.
For example: √50 = 7.07, there is also -7.07 which should not be forgotten.
Mistake 2
Not adding square root symbol in proper places
Not using the square root properly is another mistake that children make. To resolve this we need to teach children that simplifying the numbers inside the square root is important and then move on to the second step.
For Example: √(12+24) ≠ √12 + √24.
The right way of using roots is √(12+24) = √36.
Mistake 3
Not finding the correct value of a non-perfect square
The first step that needs to be taught to children is to simplify the numbers inside the square root. This is important so that students do not make mistakes while identifying the approximate value.
For Example: √50 ≈ 7.071, not 7.
Mistake 4
Confusing the square root symbol with the cube root
Students need to be taught the difference between cube root and square root constantly as this will help them keep away from mistakes.
For Example: √50 and ∛50 are different.
Mistake 5
Making mistakes in long division
Finding a square root using the long division method involves many steps. Due to this, many students might skip a step accidentally, which results in a wrong answer at the end of the sum. This may either happen in subtracting or elsewhere.
Square Root of 1392 Examples
Problem 1
Can you help Max find the area of a square box if its side length is given as √1392?
The area of the square is approximately 1392 square units.
Explanation
The area of the square = side².
The side length is given as √1392.
Area of the square = side² = √1392 x √1392 ≈ 37.282 x 37.282 ≈ 1392.
Therefore, the area of the square box is approximately 1392 square units.
Problem 2
A square-shaped building measuring 1392 square feet is built; if each of the sides is √1392, what will be the square feet of half of the building?
696 square feet
Explanation
We can just divide the given area by 2 as the building is square-shaped.
Dividing 1392 by 2 = 696.
So, half of the building measures 696 square feet.
Problem 3
Calculate √1392 x 5.
186.41
Explanation
The first step is to find the square root of 1392 which is approximately 37.282, the second step is to multiply 37.282 with 5.
So, 37.282 x 5 ≈ 186.41.
Problem 4
What will be the square root of (1380 + 12)?
The square root is 38
Explanation
To find the square root, we need to find the sum of (1380 + 12). 1380 + 12 = 1392, and then √1392 ≈ 37.282. Therefore, the square root of (1380 + 12) is approximately 37.282.
Problem 5
Find the perimeter of the rectangle if its length ‘l’ is √1392 units and the width ‘w’ is 40 units.
The perimeter of the rectangle is approximately 154.564 units.
Explanation
Perimeter of the rectangle = 2 × (length + width).
Perimeter = 2 × (√1392 + 40) ≈ 2 × (37.282 + 40) ≈ 2 × 77.282 = 154.564 units.
FAQ on Square Root of 1392
1.What is √1392 in its simplest form?
2.Mention the factors of 1392.
3.Calculate the square of 1392.
4.Is 1392 a prime number?
5.1392 is divisible by?
6.How does learning Algebra help students in Indonesia make better decisions in daily life?
7.How can cultural or local activities in Indonesia support learning Algebra topics such as Square Root of 1392?
8.How do technology and digital tools in Indonesia support learning Algebra and Square Root of 1392?
9.Does learning Algebra support future career opportunities for students in Indonesia?
Important Glossaries for the Square Root of 1392
- Square root: A square root is the inverse of a square. Example: 4^2 = 16, and the inverse of the square is the square root, that is, √16 = 4.
- Irrational number: An irrational number is a number that cannot be written in the form of p/q, where q is not equal to zero and p and q are integers.
- Principal square root: A number has both positive and negative square roots; however, it is the positive square root that is typically used in real-world applications, known as the principal square root.
- Prime factorization: Breaking down a number into the set of prime numbers that multiply together to result in the original number.
- Decimal: A number that contains a whole number and a fractional part separated by a decimal point, such as 7.86, 8.65, and 9.42.
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Jaskaran Singh Saluja
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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.
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