n = STDIN.gets.chomp.to_i

n.times do 
  x1, y1, x2, y2, x3, y3 = STDIN.gets.chomp.split(" ").map { |item| item.to_f }
  a1 = 2*(x2-x1)
  a2 = 2*(x3-x1)
  b1 = 2*(y2-y1)
  b2 = 2*(y3-y1)
  c1 = x1*x1-x2*x2+y1*y1-y2*y2
  c2 = x1*x1-x3*x3+y1*y1-y3*y3
  xp = (b1*c2-b2*c1)/(a1*b2-a2*b1)
  yp = (c1*a2-c2*a1)/(a1*b2-a2*b1)
  r  = Math.sqrt((xp-x1)*(xp-x1)+(yp-y1)*(yp-y1))
  puts "#{xp.round(3)} #{yp.round(3)} #{r.round(3)}"
end