#include<iostream>
#include<math.h>
#include<iomanip>
using namespace std;
int main(void){
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
		double x1,y1,x2,y2,x3,y3;
		cin>>x1>>y1>>x2>>y2>>x3>>y3;
		double a,b,c,d,e,f;
		a=-2*(x1-x2);
		b=-2*(y1-y2);
		c=x1*x1+y1*y1-x2*x2-y2*y2;
		d=-2*(x1-x3);
		e=-2*(y1-y3);
		f=x1*x1+y1*y1-x3*x3-y3*y3;
		double x,y,r;
		x=(b*f-c*e)/(a*e-b*d);
		y=(c*d-a*f)/(a*e-b*d);
		r=(x-x1)*(x-x1)+(y-y1)*(y-y1);
		r=sqrt(r);
		cout<<fixed<<setprecision(3)
			<<x<<" "<<y<<" "<<r<<endl;
	}
}