# Python program to find area of a triangle ( given all sides )

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

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()orraw_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.