Q:

# Python | Calculate square of a given number (3 different ways)

Given a number, and we have to calculate its square in Python.

Example:

```    Input:
Enter an integer numbers: 8

Output:
Square of 8 is 64
```

Calculating square is a basic operation in mathematics; here we are calculating the square of a given number by using 3 methods.

1. By multiplying numbers two times: (number*number)
2. By using Exponent Operator (**): (number**2)
3. By using math.pow() method: (math.pow(number,2)

### 1) By multiplying numbers two times: (number*number)

To find the square of a number - simple multiple the number two times.

Program:

``````# Python program to calculate square of a number
# Method 1 (using  number*number)

# input a number
number = int (raw_input ("Enter an integer number: "))

# calculate square
square = number*number

# print
print "Square of {0} is {1} ".format (number, square)``````

Output

```    Enter an integer number: 8
Square of 8 is 64
```

### 2) By using Exponent Operator (**): (number**2)

The another way is to find the square of a given number is to use Exponent Operator (**), it returns the exponential power. This operator is represented by **

Example: Statement m**n will be calculated as "m to the power of n".

Program:

``````# Python program to calculate square of a number
# Method 2 (using  number**2)

# input a number
number = int (raw_input ("Enter an integer number: "))

# calculate square
square = number**2

# print
print "Square of {0} is {1} ".format (number, square)``````

Output

```    Enter an integer number: 8
Square of 8 is 64 ```

### 3) By using math.pow() method: (math.pow(number,2)

pow(m,n) is an inbuilt method of math library, it returns the value of "m to the power n". To use this method, we need to import math library in the program.

The statement to import math library is import math.

Program:

``````# Python program to calculate square of a number
# Method 3 (using math.pow () method)

# importing math library
import math

# input a number
number = int (raw_input ("Enter an integer number: "))

# calculate square
square = int(math.pow (number, 2))

# print
print "Square of {0} is {1} ".format (number, square)``````

Output

```    Enter an integer number: 8
Square of 8 is 64
```