#include<iostream>
#include<cmath>
#include<cstdio>
using namespace std;
#define Pi acos(-1)
int main()
{
    int cas;
    double L,R,rarea,larea;
    cin>>cas;
    while(cas--)
    {
        cin>>L;
        R = L/5;
        rarea = Pi*R*R;
        larea = ((((6*L)/10)*L)-rarea);
        printf("%.2lf %.2lf\n",rarea,larea);
    }
    return 0;
}