#include<iostream>
#include<math.h>
#include<iomanip>

using namespace std;

int main(){
	int n;
	double x1,y1,x2,y2,x3,y3,px,py,r;
	cin>>n;
	cout<<setprecision(3);
	cout<<fixed;
	while(n--){
		cin>>x1>>y1>>x2>>y2>>x3>>y3;
		px=-1.0/2*((x2*x2-x1*x1)*(y3-y1)-(x3*x3-x1*x1)*(y2-y1)+(y3-y1)*(y2-y1)*(y2-y3))/((x3-x1)*(y2-y1)-(x2-x1)*(y3-y1));
		if(y2-y1 != 0){
			py=-(x2-x1)/(y2-y1)*(px-(x1+x2)/2)+(y1+y2)/2;
		}else{
			py=-(x3-x1)/(y3-y1)*(px-(x1+x3)/2)+(y1+y3)/2;
		}
		r=sqrt((px-x1)*(px-x1)+(py-y1)*(py-y1));
		cout<<px<<' '<<py<<' '<<r<<endl;
	}
	return 0;
}