In this post, we will learn a python program to calculate the area of a rectangle with a very basic explanation and example.

So let us start learning from the very basics…

## Formula For Area of Rectangle

The formula is: **Area = l * b**

- Where
**Area**is area of Rectangle **l**is length of the Rectangle**b**is breadth of the Rectangle

## Algorithm for Area of Rectangle

- Ask the user for the input of the length (
) and breadth (`l`

) of the rectangle using an`b`

function.`input()`

- Using the formula calculate the area of the rectangle (
).`area = l * b`

- At the end, print the result (
).`print(area)`

From the formula and algorithm, we understood how to implement a python program to calculate the area of the rectangle but before writing a program few programming concepts you have to know:

### Source Code

```
l = float(input('Enter Length of the Rectangle: '))
b = float(input('Enter Breadth of the Rectangle: '))
area = l * b
print(f"Area of rectangle is {area:.2f}")
```

### Output

Enter Length of the Rectangle: 4 Enter Breadth of the Rectangle: 5 Area of rectangle is 20.00 |

Now let us modify the above program and write it using the function.

## Calculate the Area of Rectangle Using Function

But before writing this program you should know about:

### Source Code

```
def Area_of_rectangle(length, breadth):
area = length * breadth
return area
l = float(input('Enter Length of the Rectangle: '))
b = float(input('Enter Breadth of the Rectangle: '))
print(f"Area of rectangle is {Area_of_rectangle(l,b):.2f}")
```

### Output

Enter Length of the Rectangle: 8.1 Enter Breadth of the Rectangle: 4.7 Area of rectangle is 38.07 |