#include "bits/stdc++.h"
using namespace std;

int main() {
	int N;
	cin >> N;
	for (int i = 0; i < N; i++) {
		double x1, y1, x2, y2, x3, y3, px, py, r;
		cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;
		px = ((y1 - y3) * (y1 * y1 - y2 * y2 + x1 * x1 - x2 * x2) - 
			  (y1 - y2) * (y1 * y1 - y3 * y3 + x1 * x1 - x3 * x3)) / 
			 (2 * (y1 - y3) * (x1 - x2) - 2 * (y1 - y2) * (x1 - x3));
		py = ((x1 - x3) * (x1 * x1 - x2 * x2 + y1 * y1 - y2 * y2) -
			(x1 - x2) * (x1 * x1 - x3 * x3 + y1 * y1 - y3 * y3)) /
			(2 * (x1 - x3) * (y1 - y2) - 2 * (x1 - x2) * (y1 - y3));
		r = sqrt((x1 - px) * (x1 - px) + (y1 - py) * (y1 - py));
		printf("%.3lf %.3lf %.3lf\n", px, py, r);
	}
}
