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

int main(){
	int a;
	scanf("%d",&a);
	while(a--){
		double x1,y1,x2,y2,x3,y3;
		scanf("%lf%lf%lf%lf%lf%lf",&x1,&y1,&x2,&y2,&x3,&y3);
		double a1 = 2*(x2 - x1), b1 = 2*(y2 - y1);
		double c1 = x1*x1 - x2*x2 + y1*y1 - y2*y2;
		double a2 = 2*(x3-x1), b2 = 2*(y3-y1);
		double c2 = x1*x1 - x3*x3 + y1*y1 - y3*y3;
		double x = (b1*c2 - b2*c1)/(a1*b2 - a2*b1);
		double y = (c1*a2 - c2*a1)/(a1*b2 - a2*b1);
		double r = hypot(x-x1,y-y1);
		printf("%.3lf %.3lf %.3lf\n",x,y,r);
	}
}

