#!/usr/bin/env python
from math import *
def g(x):
	y = (int((1000 * abs(x)) * 2 + 1) // 2) / 1000
	if x < 0:
		y *= -1
	return y
def func(x):
	x1, y1, x2, y2, x3, y3 = x
	
	a = x1 - x2
	b = y1 - y2
	c = (x1 * x1 + y1 * y1 - x2 * x2 - y2 * y2) / 2
	d = x1 - x3
	e = y1 - y3
	f = (x1 * x1 + y1 * y1 - x3 * x3 - y3 * y3) / 2
	x = (e * c - b * f) / (a * e - b * d)
	y = (a * f - d * c) / (a * e - b * d)
	r = sqrt((x1 - x) * (x1 - x) + (y1 - y) * (y1 - y))
	x = "{0:.3f}".format(g(x))
	y = "{0:.3f}".format(g(y))
	r = "{0:.3f}".format(g(r))
	print(x + " " + y + " " + r)
n = int(input())
a = []
for _ in range(n):
	a.append(list((map(float, input().split()))))
for i in a:
	func(i)
