Python program to find perimeter of square

A square is a closed two-dimensional figure having 4 equal sides. Each angle of a square is 90 degrees. The perimeter of a square is the sum of all its sides.

Problem Description

In this problem, we are given the side of a square, and we have to find the perimeter of the square. In this tutorial, we are going to find the perimeter of a given square in Python using different approaches.

Example 1

• Input: side = 6 units
• Output: 24 units

Explanation

Using the formula to calculate the perimeter of the square: 4 × side = 4 × 6 = 24 units

Example 2

• Input: side = 0 units
• Output: 0 units

Explanation

If the side length is zero, the square does not exist as a two-dimensional figure, and hence, there is no perimeter.

Example 3

• Input: side = 12 units
• Output: 48 units

Explanation

Using the formula to calculate the perimeter of the square: 4 × side = 4 × 12 = 48 units

Formula

The perimeter of a square is calculated using the formula:

Perimeter = 4 × side

Approaches to Calculate Perimeter

• Using Direct Formula
• Using Function
• Using Class

Using Direct Formula

We use the direct formula to calculate the perimeter of the square. The formula is Perimeter = 4 × side. This is the simplest approach ?

# Take the side length as input
side = 5

# Calculate the perimeter using the formula
perimeter = 4 * side

print(f"The perimeter of the square with side {side} is: {perimeter}")

The perimeter of the square with side 5 is: 20

Time Complexity: O(1)
Space Complexity: O(1)

Using Function

We use a function to calculate the perimeter of the square. This makes the code more modular and reusable ?

# Function to calculate the perimeter of a square
def calculate_perimeter(side):
    return 4 * side

# Input: side length of the square
side = 6

# Call the function
perimeter = calculate_perimeter(side)

print(f"The perimeter of the square with side length {side} is: {perimeter}")

The perimeter of the square with side length 6 is: 24

Time Complexity: O(1)
Space Complexity: O(1)

Using Class

We can create a class to represent a square and include methods to calculate its perimeter. This approach is useful for object-oriented programming ?

class Square:
    def __init__(self, side):
        self.side = side
    
    def calculate_perimeter(self):
        return 4 * self.side
    
    def display_info(self):
        perimeter = self.calculate_perimeter()
        print(f"Square with side {self.side} has perimeter: {perimeter}")

# Create square objects
square1 = Square(8)
square2 = Square(3.5)

# Display information
square1.display_info()
square2.display_info()

Square with side 8 has perimeter: 32
Square with side 3.5 has perimeter: 14.0

Comparison

Conclusion

The perimeter of a square can be calculated using the simple formula 4 × side. Use functions for reusability or classes for object-oriented approaches depending on your requirements.