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

int main ()
{
    int num;
    double x1,y1,x2,y2,x3,y3;

    cin >> num;

    for( int i = 0; i < num; i++ )
    {
        double px = 0, py = 0, r = 0;
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;

        py = (-x2*x3*x3+x2*x2*x3-x2*y3*y3+y2*y2*x3) / (2*x3*y2-2*x2*y3);
        px = (2*(y1-y2)*py+x2*x2-x1*x1+y2*y2-y1*y1) / (2*x2-2*x1);
        r = (px-x1)*(px-x1) + (py-y1)*(py-y1);

        cout << fixed;
        cout << setprecision(3) << px << " " << py << " " << sqrt(r) << endl;

    }



    return 0;
}
