Python Program to Find Area of Rectangle

The task of calculating the Area of a Rectangle in Python involves taking the length and width as input, applying the mathematical formula for the area of a rectangle, and displaying the result.

Area of Rectangle Formula :

Area = Width * Height

Where:

• Length is the longer side of the rectangle.
• Width is the shorter side of the rectangle.

For example, if Length = 5 and Width = 8, the area is calculated as Area=5×8=40.

Using * operator

The direct multiplication approach is the most efficient way to find the area of a rectangle . It involves multiplying the length and width directly using the * operator.

x = 5  # length
y = 8  # width

res = x * y
print(res)

40

Explanation: This code calculates the area of a rectangle using the formula length * width. Here, x = 5 represents the length and y = 8 represents the width. The multiplication x * y is stored in res, which holds the area value.

Using lamda function

A lambda function provides a quick and concise way to compute the area of a rectangle in a single line. It is often used in cases where you need an inline solution, especially when working with functional programming concepts like map() or reduce().

x = 5
y = 8

area = (lambda length, width: length * width)(x, y)
print(area)

40

Explanation: It multiplies x = 5 and y = 8 in a single line area = (lambda length, width: length * width)(x, y) and the result 40, is stored in area.

Using numpy

NumPy is a powerful library for numerical computations, but using it to find the area of a single rectangle is overkill. It is more suitable when dealing with arrays of lengths and widths. This approach is only recommended when performing bulk calculations involving multiple rectangles.

import numpy as np

x = np.array(5) #  length
y = np.array(8) #  width 

area = np.multiply(x, y)
print(area)

40

Explanation np.multiply(x, y) performs element-wise multiplication of x and y using NumPy's multiply() function and stores the result (area) in the variable area.