# How to calculate Square Root in Python ?

In this tutorial, we will learn about Python Square Root Function. Python provides a square root function through the `math.sqrt()` method, which is part of the `math` module. This function allows you to calculate the square root of a given number.

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## How to use Python Square Root Function

Python’s square root function serves as a mathematical tool that people use to calculate the square root of a number. The square root of a number ‘x’ is a value ‘y’ such that ‘y * y = x’. In Python, you can calculate the square root of a number using the `math.sqrt()` function from the `math` module.

## Syntax: Square Root Function

``````import math
result = math.sqrt(x)
``````
• “Import math”: This statement imports the math module, which houses the sqrt() function for calculating square roots.
• “The ‘result’ variable”: This variable stores the calculated square root.
• “Calculating the square root of ‘x’ using math.sqrt(x)”: This expression performs the square root calculation on ‘x,’ which represents the number for which you want to determine the square root.

## Example:

``````import math

# Calculate the square root of 16
x = 16
result = math.sqrt(x)

print(f"The square root of {x} is {result}")
``````

### Output:

``````The square root of 16 is 4.0
``````
• To start, we import the `math` module by using `import math`.
• Next, we assign the value of ‘x’ as 16.
• Subsequently, we calculate the square root of ‘x’ by employing the expression `result = math.sqrt(x)`.
• In conclusion, we display the result through the `print(f"The square root of {x} is {result}")` statement, which yields the output “The square root of 16 is 4.0.”

## What are the uses of sqrt() in the real world?

• Measuring Distances: You can use it to find the length of one side of a square or rectangle when you know the area.
• Engineering and Construction: It helps calculate dimensions for building projects, like determining the length of a diagonal brace in a frame.
• Finance: In finance, it can be used for things like calculating the standard deviation of an investment’s returns.
• Science: It’s essential in scientific calculations, such as physics, to determine velocities or forces.
• Home Improvement: When you need to find the length of a ladder to reach a certain height on a wall or roof.
• Technology: In computer graphics, it’s used to calculate distances, angles, and sizes of objects on the screen.
• Education: Students use it in math classes to understand geometry and algebraic concepts.

## Summary

This function proves valuable across a range of real-world situations, spanning mathematics, science, engineering, finance, and everyday problem-solving. Additionally, it streamlines square root calculations, enhancing their accessibility within Python programs.

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