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

int main()
{
	int n; cin>>n;
	while(n--)
	{
		double x1,y1,x2,y2,x3,y3;
		cin>>x1>>y1>>x2>>y2>>x3>>y3;

		double a1=2*(x2-x1);
		double b1=2*(y2-y1);
		double c1=x1*x1-x2*x2+y1*y1-y2*y2;
		double a2=2*(x3-x1);
		double 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=sqrt((x-x1)*(x-x1)+(y-y1)*(y-y1));

		x=floor(x*1000+0.5)/1000;
		y=floor(y*1000+0.5)/1000;
		r=floor(r*1000+0.5)/1000;

		printf("%.3lf %.3lf %.3lf\n",x,y,r);
	}
	return 0;
}