Learn about **Python Program to Find Area of Triangle Given Three Sides** in the below code example. Also refer the comments in the code snippet to get a detailed view about what’s actually happening.

Contents

#### Python Program to Find Area of Triangle Given Three Sides

```
# python program to find the area of the triangle
# sides inputs
a = float(input('Enter the first side of the triangle: '))
b = float(input('Enter the second side of the triangle: '))
c = float(input('Enter the third side of the triangle: '))
#checking conditions
# sum of two sides must be smaller than the third side.
if (a < 0 or b < 0 or c < 0 or (a+b <= c) or (a+c <=b) or (b+c <=a) ):
print('Not a valid triangle')
else:
s = (a + b + c) / 2
area = (s * (s - a) * (s - b) * (s - c)) ** 0.5
print('Area of triangle = %0.2f' %area)
```

**Output:**

Enter the first side of the triangle: 3 Enter the second side of the triangle: 4 Enter the third side of the triangle: 5 Area of triangle = 6.00

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