Last updated on May 26th, 2025
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 the field of vehicle design, finance, etc. Here, we will discuss the square root of 1131.
The square root is the inverse of the square of the number. 1131 is not a perfect square. The square root of 1131 is expressed in both radical and exponential form. In the radical form, it is expressed as √1131, whereas (1131)^(1/2) in the exponential form. √1131 ≈ 33.631, 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.
The prime factorization method is used for perfect square numbers. However, the prime factorization method is not used for non-perfect square numbers, where the long-division method and approximation method are used. Let us now learn the following methods:
The product of prime factors is the prime factorization of a number. Now let us look at how 1131 is broken down into its prime factors:
Step 1: Finding the prime factors of 1131 Breaking it down, we get 3 × 3 × 3 × 3 × 7: 3^2 × 3 × 7
Step 2: Now we found out the prime factors of 1131. The second step is to make pairs of those prime factors. Since 1131 is not a perfect square, therefore the digits of the number can’t be grouped in pairs. Therefore, calculating 1131 using prime factorization is impossible.
The long division method is particularly used for non-perfect square numbers. In this method, we should check the closest perfect square number for the given number. 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 1131, we need to group it as 31 and 11.
Step 2: Now we need to find n whose square is ≤ 11. We can say n as ‘3’ because 3 × 3 is lesser than or equal to 11. Now the quotient is 3.
Step 3: Subtract 9 from 11 to get a remainder of 2. Bring down 31, making it 231. Step 4: Double the current quotient (3) to get 6, and use it as the first digit of the new divisor.
Step 5: Find a digit n such that 6n × n ≤ 231. Let's consider n as 3.
Step 6: Subtract 189 (63 × 3) from 231, resulting in 42, and the quotient becomes 33.
Step 7: Since the remainder is less than the divisor, add a decimal point to the quotient. Adding the decimal point allows us to add two zeroes to the remainder. Now the new dividend is 4200.
Step 8: Find the new divisor, which is 663, because 663 × 6 = 3978.
Step 9: Subtract 3978 from 4200 to get 222.
Step 10: Now the quotient is 33.6.
Step 11: Continue doing these steps until we get two numbers after the decimal point. So the square root of √1131 is approximately 33.63.
The approximation method is another method for finding 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 1131 using the approximation method.
Step 1: Now we have to find the closest perfect square of √1131. The smallest perfect square below 1131 is 1024 (32^2), and the largest perfect square above 1131 is 1156 (34^2). √1131 falls somewhere between 32 and 34.
Step 2: Apply the formula: (Given number - smallest perfect square) / (Greater perfect square - smallest perfect square). Using the formula (1131 - 1024) / (1156 - 1024) = 107 / 132 ≈ 0.81.
Step 3: Add this decimal to the smaller number to approximate the square root: 32 + 0.81 = 32.81. So the square root of 1131 is approximately 33.63.
Students make mistakes while finding the square root, such as forgetting about the negative square root or skipping long division methods. Now let us look at a few of those mistakes that students tend to make in detail.
Can you help Max find the area of a square box if its side length is given as √1231?
The area of the square is approximately 1231 square units.
The area of the square = side^2.
The side length is given as √1231.
Area of the square = side^2 = √1231 x √1231 = 1231.
Therefore, the area of the square box is approximately 1231 square units.
A square-shaped building measuring 1131 square feet is built; if each of the sides is √1131, what will be the square feet of half of the building?
565.5 square feet
We can divide the given area by 2 as the building is square-shaped.
Dividing 1131 by 2 = 565.5
So half of the building measures 565.5 square feet.
Calculate √1131 × 5.
Approximately 168.16
The first step is to find the square root of 1131, which is approximately 33.63.
The second step is to multiply 33.63 with 5.
So 33.63 × 5 ≈ 168.16
What will be the square root of (1231 + 6)?
The square root is approximately 35.
To find the square root, we need to find the sum of (1231 + 6). 1231 + 6 = 1237, and then the square root of 1237 is approximately 35.
Find the perimeter of the rectangle if its length ‘l’ is √1231 units and the width ‘w’ is 38 units.
We find the perimeter of the rectangle as approximately 139.26 units.
Perimeter of the rectangle = 2 × (length + width) Perimeter = 2 × (√1231 + 38) = 2 × (35.11 + 38) ≈ 2 × 73.11 ≈ 139.26 units.
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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