12578-10:6:2

#include<stdio.h>
#include<math.h>
#define PI acos(-1)
int main()
{
    int t;
    double l, w, r, R, A, G;
    scanf("%d", &t);
    while(t--)
    {
        scanf("%lf", &l);
        w = (6*l)/10;
        r = (2*l)/10;
        R = (PI*r*r);
        A = l*w;
        G = A-R;
        printf("%.2f %.2f\n", R, G);
    }
    return 0;
}