#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()
{
    int num;
    cin >> num;
    double x1, x2, x3, y1, y2, y3;
    double px, py, r;
    while(cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3)
    {
        px = (1 / 2.0) * ((x1 * x1 + y1 * y1) * (y3 - y2) + (x2 * x2 + y2 * y2) * (y1 - y3)
            + (x3 * x3 + y3 * y3) * (y2 - y1)) / (x1 * (y3 - y1) + x2 * (y1 - y3) + x3 * (y2 - y1));
        py = -(x3 - x2) / (y3 - y2) * px + (1 / 2.0) * (x3 * x3 - x2 * x2 + y3 * y3 - y2 * y2) / (y3 - y2);
        r = sqrt((x1 - px) * (x1 - px) + (y1 - py) * (y1 - py));

        cout << fixed << setprecision(3) << round(px * 1000) / 1000 << " " << round(py * 1000) / 1000 << " " << round(r * 1000) / 1000 << endl;
    }
}