# Python program to calculate the area of triangle

In this example, we will write a simple program that calculates an area of a triangle using operators in Python. To better understand this example, make sure you have knowledge of the following tutorials:-

The area of the triangle can be calculated using the basic formula:-

Here, a, b and c are the sides of the trianlge.

s = (a + b + c) / 2

area = (s*(s-a)*(s-b)*(s-c)) ** 0.5

here, s is the semi parameter.

**Source Code:**

a = 4 b = 7 c = 6 s = (a + b + c) / 2 area = (s*(s-a)*(s-b)*(s-c)) ** 0.5 print('The area of the triangle is %0.2f' %area)

The output of the above program is:-

## Example:- Use user input to calculate the area of a triangle

The above program can be modified to take input from the user and calculate the area:-

a = float(input('Enter first side: ')) b = float(input('Enter second side: ')) c = float(input('Enter third side: ')) s = (a + b + c) / 2 area = (s*(s-a)*(s-b)*(s-c)) ** 0.5 print('The area of the triangle is %0.2f' %area)

The output of the above program is:-

Enter second side: 7

Enter third side: 6

The area of the triangle is 11.98