#include <bits/stdc++.h>
using namespace std;
#define all(c) (c).begin(),(c).end()
#define rep(i,n) for(int i=0; i<(int)(n); i++)
#define iter(c) __typeof((c).begin())
#define tr(it,c) for(iter(c) it=(c).begin(); it!=(c).end(); it++)
#define pb(a) push_back(a)
#define mp(a,b) make_pair(a,b)
#define pr(a) cout << (a) << endl
#define F first
#define S second

const double EPS = 1e-10;
const double INF = 1e12;
typedef complex<double> P; //Point
namespace std {
  bool operator < (const P& a, const P& b) {
    return real(a) != real(b) ? real(a) < real(b) : imag(a) < imag(b);
  }
}
double cross(const P& a, const P& b) {//外積
  return imag(conj(a)*b);
}
double dot(const P& a, const P& b) {//内積
  return real(conj(a)*b);
}
struct L : public vector<P> { // Line
  L(const P &a, const P &b) {
    push_back(a); push_back(b);
  }
};
typedef vector<P> G;
struct C {  //Circle
  P p; double r;
  C(const P &p, double r) : p(p), r(r) { }
};

int ccw(P a, P b, P c) {
  b -= a; c -= a;
  if (cross(b, c) > EPS)   return +1;       // counter clockwise
  if (cross(b, c) < -EPS)   return -1;       // clockwise
  if (dot(b, c) < -EPS)     return +2;       // c--a--b on line
  if (norm(b) < norm(c)) return -2;       // a--b--c on line
  return 0;                               // a--c--b on line
}

//cross  L line  S senbun  P point
bool intersectLL(const L &l, const L &m) {
  return abs(cross(l[1]-l[0], m[1]-m[0])) > EPS || // non-parallel
         abs(cross(l[1]-l[0], m[0]-l[0])) < EPS;   // same line
}
bool intersectLS(const L &l, const L &s) {
  return cross(l[1]-l[0], s[0]-l[0])*       // s[0] is left of l
         cross(l[1]-l[0], s[1]-l[0]) < EPS; // s[1] is right of l
}
bool intersectLP(const L &l, const P &p) {
  return abs(cross(l[1]-p, l[0]-p)) < EPS;
}
bool intersectSS(const L &s, const L &t) {
  return ccw(s[0],s[1],t[0])*ccw(s[0],s[1],t[1]) <= 0 &&
         ccw(t[0],t[1],s[0])*ccw(t[0],t[1],s[1]) <= 0;
}
bool intersectSP(const L &s, const P &p) {
  return abs(s[0]-p)+abs(s[1]-p)-abs(s[1]-s[0]) < EPS; // triangle inequality
}

//distance
P projection(const L &l, const P &p) {
  double t = dot(p-l[0], l[0]-l[1]) / norm(l[0]-l[1]);
  return l[0] + t*(l[0]-l[1]);
}
P reflection(const L &l, const P &p) {
  return p + 2.0*(projection(l, p) - p);
}
double distanceLP(const L &l, const P &p) {
  return abs(p - projection(l, p));
}
double distanceLL(const L &l, const L &m) {
  return intersectLL(l, m) ? 0 : distanceLP(l, m[0]);
}
double distanceLS(const L &l, const L &s) {
  if (intersectLS(l, s)) return 0;
  return min(distanceLP(l, s[0]), distanceLP(l, s[1]));
}
double distanceSP(const L &s, const P &p) {
  const P r = projection(s, p);
  if (intersectSP(s, r)) return abs(r - p);
  return min(abs(s[0] - p), abs(s[1] - p));
}
double distanceSS(const L &s, const L &t) {
  if (intersectSS(s, t)) return 0;
  return min(min(distanceSP(s, t[0]), distanceSP(s, t[1])),
             min(distanceSP(t, s[0]), distanceSP(t, s[1])));
}
P crosspoint(const L &l, const L &m) {
  double A = cross(l[1] - l[0], m[1] - m[0]);
  double B = cross(l[1] - l[0], l[1] - m[0]);
  if (fabs(A) < EPS && fabs(B) < EPS) return m[0]; // same line
  if (fabs(A) < EPS) assert(false); // !!!PRECONDITION NOT SATISFIED!!!
  return m[0] + B / A * (m[1] - m[0]);
}

double abs2(const P &a){ return a.real()*a.real()+a.imag()*a.imag(); }
C circumcircle(const P &a,P b,P c){
  b-=a; c-=a;
  double A2=abs2(b-c),B2=abs2(b),C2=abs2(c);
  double d=2*cross(b,c);
  double nx=c.imag()*B2-b.imag()*C2;
  double ny=b.real()*C2-c.real()*B2;
  double r2=A2*B2*C2/(d*d);
  return C{a+P{nx/d,ny/d},sqrt(r2)};
}
int main() {
  int T;
  cin >> T;
  while(T--) {
    P a,b,c;
    double z[6];
    for(int i=0; i<6; i++) cin >> z[i];
    a.real(z[0]);
    a.imag(z[1]);
    b.real(z[2]);
    b.imag(z[3]);
    c.real(z[4]);
    c.imag(z[5]);
    C x=circumcircle(a,b,c);
    printf("%.3f %.3f %.3f\n",x.p.real(),x.p.imag(),x.r);
  }
  return 0;
}


Measured memory_bytes: 1256