# Python Program to Calculate the Area of a Triangle

By | October 21, 2021

Heron’s formula is a common way to calculate the area of a triangle. In this Python tutorial, you will learn how to write a simple Python program to calculate the area of a triangle.

### Algorithm to Find the Area of a Triangle Using Python

• 1st Step – Ask the user to enter the length of the three sides of the triangle.
• 2nd Step – Next, calculate the area using Heron’s formula.
• 3rd Step – At last, use the print function and display the area of the triangle on the screen.

### Heron’s Formula

Area of a triangle= √(s(s-a)*(s-b)*(s-c))

Here, s = (a+b+c)/2, and a, b, and c are the length of the three sides of the given triangle.

## Python Program to Calculate the Area of a Triangle

```import math
a= float(input("Enter the length of first side: "))
b= float(input("Enter the length of second side: "))
c= float(input("Enter the length of third side: "))
s= (a+b+c)/2
area = math.sqrt((s*(s-a)*(s-b)*(s-c)))
print("The area of Triangle is: {0:.2f}".format(area))```

Input

```Enter the length of first side: 4
Enter the length of second side: 13
Enter the length of third side: 15```

Output

`The area of Triangle is: 24.00`

### Conclusion

In this example, we have used Heron’s formula to calculate the area of the triangle. It is a straightforward program with only a few lines of code. Moreover, to enhance your Python logic-building skill, you can use some other logic to find the area of the triangle. Ensure to share them with the TGB community via the dedicated comments section below.