Contest1388/O.cpp

#include <bits/stdc++.h>

using namespace std;
const double PI = acos(-1.0);

int main() {
    double r, h;
    cin >> r >> h;
    cout << "Area=" << fixed << setprecision(2)
         << 2 * PI * r * r + 2 * PI * r * h;
    return 0;
}