The square root calculator tool, as the name suggests, is used to find the square root of any given number. When the square root is multiplied by itself twice it gives the square, that is, the given number. In this calculator, you simply need to enter the number for which the square root needs to be found.

## How to use the square root calculator?

**Step 1:** Enter the number for which the square root has to be calculated.

**Step 2:** Click on the **Check** button.

**Step 3:** Check the **Show Solution** checkbox to view the calculation.

On clicking the Check button, the square root of the entered number will be displayed.

## Examples to find the square root of a number

**Example 1:**

### Square root of 25 = 5

**Solution:**

√25 = √ (5 x 5)

= 5

**Example 2:**

### Square root of 55 = 7.42

**Solution:**

√55 = √(7.42 x 7.42)

= 7.42

A square root is a mathematical operation that involves finding the root of a number. In simple terms, the square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 25 is 5, because 5 multiplied by 5 equals 25. A square root calculator is a tool that is used to calculate the square root of a number. In this article, we will discuss how to use a square root calculator, the history of square roots, the different methods of finding square roots, and some real-world applications of square roots.

## How to Use a Square Root Calculator

Using a square root calculator is straightforward. To calculate the square root of a number, you need to follow these steps:

### Step 1: Input the Number

Input the number that you want to find the square root of into the calculator. For example, if you want to find the square root of 25, input “25” into the calculator.

### Step 2: Calculate the Square Root

The calculator will then calculate the square root of the number you entered.

History of Square Roots

The concept of square roots dates back to ancient civilizations such as the Babylonians, Egyptians, and Greeks. The Babylonians used a method called “the method of heron,” which involved finding the areas of triangles and quadrilaterals to estimate the square roots of numbers. The Egyptians used a similar method that involved dividing a number into a sum of fractions and then taking the reciprocal of that sum to find the square root. The Greeks, on the other hand, developed a more sophisticated method of finding square roots, which involved using geometric constructions to find the length of a side of a square.

In the Middle Ages, mathematicians in India developed a system of numerals that included the use of zero, which made it much easier to perform calculations involving large numbers. This system of numerals spread to the Arab world and then to Europe, where it became known as the Hindu-Arabic numeral system.

During the Renaissance, mathematicians such as Leonardo da Vinci and Galileo Galilei made significant contributions to the development of the theory of square roots. In the 16th century, Italian mathematician Niccolò Tartaglia developed a method for solving cubic equations that involved finding the square root of a complex number. This method was later refined by mathematicians such as Gerolamo Cardano and Rafael Bombelli.

Different Methods of Finding Square Roots

There are several methods of finding square roots, including the following:

**1. Long Division Method**

The long division method involves dividing the number into pairs of digits, starting from the right-hand side. The first pair of digits represents the units digit, the second pair represents the tens digit, the third pair represents the hundreds digit, and so on. The square root is then calculated by finding the largest digit whose square is less than or equal to the first pair of digits, subtracting that square from the first pair of digits, and then bringing down the next pair of digits.

**2. Prime Factorization Method**

The prime factorization method involves finding the prime factors of the number and then dividing them into pairs. The square root is then calculated by taking the product of the prime factors in each pair.

**3. Newton’s Method**

Newton’s method involves using calculus to find the square root of a number. The method involves starting with an initial guess and then refining that guess using a series of approximations.

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