Hello everybody, welcome back! Here we learn how to find the area of a triangle when all the 3 sides of it are given.

First, we calculate semi-perimeter `s`

as sum of all sides divided by 2 then calculate the area using the formula `(s*(s-a)*(s-b)*(s-c)) ** 0.5`

#### Formulae:

Semi-perimeter : `s = (a + b + c) / 2`

Area = `(s*(s-a)*(s-b)*(s-c)) ** 0.5`

**You can also watch the video on YouTube here.**

#### Task :

To find the area of a triangle when all 3 sides of a triangle are given.

#### Approach :

- Read three sides(a, b, c) of a triangle using
`input()`

or`raw_input()`

. - We calculate the semi-perimeter s as sum of all three sides divided by 2.
`s = ( a + b + c ) / 2`

- After calculating semi-perimeter, we calculate is area as square root of
`(s*(s-a)*(s-b)*(s-c))`

- For finding square root we can use a function called sqrt from math module or by using exponential operation, we discussed about both sqrt function and using exponential operation
- We use exponential operation here to calculate area.
`area = (s*(s-a)*(s-b)*(s-c)) ** 0.5`

- Finally, print the result.

#### Area of Triangle – Code Visualization

#### Program :

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)

#### Output :

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