#include <iostream>
#include <math.h>
using namespace std;

int main(){

	double x1,y1,x2,y2,x3,y3,x,y;
	double a1,a2,b1,b2,c1,c2;
	int n,i;
	cin >> n;
	for(i=0;i<n;i++){
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;
		a1 = 2*(x2-x1);
		b1 = 2*(y2-y1);
		c1 = x1*x1-x2*x2+y1*y1-y2*y2;
		a2 = 2*(x3-x1);
		b2 = 2*(y3-y1);
		c2 = x1*x1-x3*x3+y1*y1-y3*y3;
		x=(b1*c2-b2*c1)/(a1*b2-a2*b1);
		y=(c1*a2-c2*a1)/(a1*b2-a2*b1);
		printf("%.3f %.3f %.3f\n",x,y,sqrt((x-x1)*(x-x1)+(y-y1)*(y-y1)));
	}

	return 0;
}