#include <iostream>
#include <cmath>

using namespace std;

const double PI = 3.14159265;
const double radFürGrad = 0.0174532925;

double umrechnenVonGradInBogenmass(double radFürGrad, double i){// 0,0174532925 = rad für 1 grad
    return sqrt(radFürGrad*i);
}


int main() {

    double i;

    cout << "Umwandler von Grad in Bogenmass \n";
    cout << " \n";
    cout << "Bitte geben sie den Winkel in Grad an: ";

    cin >> i;

    double a = i*radFürGrad;

    cout << a;

    return 0;
}