include Math

gets.to_i.times do
	x1, y1, x2, y2, x3, y3 = gets.split.map(&:to_i)

	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

	a = sqrt((x2-x3)**2 + (y2-y3)**2)
	b = sqrt((x3-x1)**2 + (y3-y1)**2)
	c = sqrt((x1-x2)**2 + (y1-y2)**2)

	px = (b1*c2 - b2*c1)/(a1*b2 - a2*b1)
	py = (c1*a2 - c2*a1)/(a1*b2 - a2*b1)
	r = (a*b*c) / sqrt((a+b+c)*(-a+b+c)*(a-b+c)*(a+b-c))

	printf("%.3f %.3f %.3f\n", px, py, r);
end