#include <cmath>
#include <cstdio>
using namespace std;
int main()
{
	int n;
	double x, y, x1, x2, x3, y1, y2, y3, a1, a2, b1, b2, c1, c2;
	scanf("%d", &n);
	for( ; n > 0; n--) {
		scanf("%lf%lf%lf%lf%lf%lf", &x1, &y1, &x2, &y2, &x3, &y3);
		a1=2*(x2-x1),b1=2*(y2-y1);
		c1=x1*x1-x2*x2+y1*y1-y2*y2;
		a2=2*(x3-x1),b2=2*(y3-y1);
		c2=x1*x1-x3*x3+y1*y1-y3*y3;
		x=(b1*c2-b2*c1)/(a1*b2-a2*b1);
		y=(c1*a2-c2*a1)/(a1*b2-a2*b1);
		printf("%.3lf %.3lf %.3lf\n", x, y, hypot(x - x1, y - y1));
	}

	return 0;
}