include include

using namespace std;

int main() {
double a, b, c, p, height;

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;
// Calculate the semi-perimeter of the triangle
p = (a + b + c) / 2;
// Calculate the height of the triangle
height = (2 * sqrt(p * (p - a) * (p - b) * (p - c))) / a;
cout << "The height of the triangle dropped on side a is: " << height << endl;
return 0;

}