Python Program to Find Area of Rectangle

In this article, we've created some programs in Python to find and print area of rectangle based on its length and base entered by user. Here are the list of programs:

• Find Area of Rectangle without Function
• Find Area of Rectangle using User-defined Function
• Using Class and Object

Formula to Find Area of Rectangle

To find area of a rectangle, use:

area = len*bre

Here area indicates to area value, len indicates to length value and bre indicates to breadth value of rectangle.

Find Area of Rectangle

To calculate area of rectangle in Python, you have to ask from user to enter the length and breadth value of rectangle. Then apply the formula and find its area as shown in the program given below:

print("Enter Length of Rectangle: ")
l = float(input())
print("Enter Breadth of Rectangle: ")
b = float(input())
a = l*b
print("\nArea = ", a)

Here is its sample run:

Now supply inputs as length and breadth of a rectangle say 7 as length and 5 as breadth, press ENTER key to find and print the area value as shown in the snapshot given below:

Find Area of Rectangle using Function

This program does the same job as of previous program. But this program uses a user-defined function areaOfRect() to find the area value of rectangle.

This function takes two arguments and returns its multiplication. Therefore, we've passed length (l) and breadth (b) as its argument. The value of l and b gets copied to x and y and x*y gets returned by this function, and assigned to a, that is the area value of given rectangle:

def areaOfRect(x, y):
    return x*y

print("Enter Length and Breadth of Rectangle: ", end="")
l = float(input())
b = float(input())
a = areaOfRect(l, b)
print("\nArea = ", a)

Here is its sample run with user input 5.3 as length and 2.4 as breadth of rectangle:

To print the area value upto 2 decimal places only, replace the following statement:

print("\nArea = ", a)

with the statement given below:

print("\nArea = {:.2f}".format(a))

Now the output looks like:

Find Area of Rectangle using Class

This is the last program of this article. This program uses class and object, an object-oriented feature of Python to find and print area of rectangle.

class fresherearth:
    def areaOfRect(self, x, y):
        return x*y

print("Enter Length and Breadth of Rectangle: ", end="")
l = float(input())
b = float(input())

cobj = fresherearth()
a = cobj.areaOfRect(l, b)

print("\nArea = {:.2f}".format(a))

This program produces similar output as of previous program with value upto 2 decimal places only.

We've assigned all the properties of the class fresherearth to an object named cobj using following statement:

cobj = fresherearth()

Now through this object, we can access the member function (areaOfRect()) of the class, using dot (.) operator. Rest of the things works like a normal function.

Same Program in Other Languages

• Java Calculate Area of Rectangle
• C Calculate Area of Rectangle
• C++ Calculate Area of Rectangle

Python Online Test