#include<bits/stdc++.h>
using namespace std;
double r=5,c,s,v,pai=3.141593;
int main(){
	c=2*r*pai;
	s=pai*r*r;
	v=(4.0/3)*pai*r*r*r;
	cout<<c<<endl<<s<<endl<<v<<endl;
	return 0;
}
//4/3*pai*r^3