#include <iostream>
#include <cmath>
#include <cstdio>
using namespace std;

int main(){
	int n;
	double x1,x2,x3,y1,y2,y3,px,py,r,a,b,c,d,e,f;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>x1>>y1>>x2>>y2>>x3>>y3;
		a = (x2-x1)*2.0;
        b = (y2-y1)*2.0;
        c = (x2*x2 + y2*y2 - x1*x1 - y1*y1);
        d = (x3-x1)*2.0;
        e = (y3-y1)*2.0;
        f = (x3*x3 + y3*y3 - x1*x1 - y1*y1);
        px = (c*e-b*f)/(a*e-b*d);
        py = (a*f-c*d)/(a*e-b*d);
        r = sqrt((px-x1)*(px-x1) + (py-y1)*(py-y1));
        printf("%.3f %.3f %.3f\n",px,py,r);
	}
}
