#include <bits/stdc++.h>

using namespace std;

int main() {
    int r = 5;
    const double PI = 3.141593;
    cout << 2 * PI * r << endl;
    cout << PI * r * r << endl;
    cout << 4.0 / 3 * PI * r * r * r << endl;

    return 0;
}