#include <stdio.h>
#include <math.h>
 
int main()
{
    int n;
    double x1, x2, x3, y1, y2, y3, r, Px, Py;
    
    scanf("%d", &n);
    for(int i = 0; i < n; i++)
    {
        scanf("%lf %lf %lf %lf %lf %lf", &x1, &y1, &x2, &y2, &x3, &y3);
        Px = ((y2-y3)*(x1*x1+y1*y1) + (y3-y1)*(x2*x2+y2*y2) + (y1-y2)*(x3*x3+y3*y3))/(2*(x1*(y2-y3)+x2*(y3-y1)+x3*(y1-y2)));
        Py = ((x2-x3)*(x1*x1+y1*y1) + (x3-x1)*(x2*x2+y2*y2) + (x1-x2)*(x3*x3+y3*y3))/(2*(y1*(x2-x3)+y2*(x3-x1)+y3*(x1-x2)));
        r = sqrt((x1-Px)*(x1-Px)+(y1-Py)*(y1-Py));
        printf("%.3lf %.3lf %.3lf\n",Px, Py, r);
    }
    return 0;
}

