**The Program in C++ to Find the Area of any triangle using Heron’s Formula is given below:**

```
#include <iostream>
#include <cmath>
using namespace std;
int main() {
double a, b, c, s, area;
cout << "Enter the length of side a: ";
cin >> a;
cout << "Enter the length of side b: ";
cin >> b;
cout << "Enter the length of side c: ";
cin >> c;
s = (a + b + c) / 2;
area = sqrt(s * (s-a) * (s-b) * (s-c));
cout << "Area of the triangle: " << area << endl;
return 0;
}
```

## Output:

Enter the length of side a: 5

Enter the length of side b: 7

Enter the length of side c: 3

Area of the triangle: 6.49519

## Pro-Tips**💡**

In this program, the user is prompted to enter the lengths of the three sides of the triangle (a, b, c).

These values are then stored in the corresponding variables.

The semi-perimeter of the triangle is calculated using the formula ‘`s = (a + b + c) / 2`

‘, and the area is calculated using Heron’s formula ‘`area = sqrt(s * (s-a) * (s-b) * (s-c))'`

.

Heron’s formula is used when the length of all three sides of a triangle are known, it is a way to calculate the area of a triangle without using height and base.

Heron’s formula is applicable for any triangle. The resulting area of the triangle is then displayed on the screen.

Note: ‘`sqrt()'`

is a library function in C++ that returns the square root of a number.

**Learn C-Sharp ↗**

C-sharp covers every topic to learn about C-Sharp thoroughly.

**Learn C Programming ↗**

C-Programming covers every topic to learn about C-Sharp thoroughly.

**Learn C++ Programming↗**

**Learn C++ Programming↗**

C++ covers every topic to learn about C-Sharp thoroughly.