#include <cstdio>
#include <cmath>
 
int main() {
    int T;
    scanf("%d", &T);
    for (int t = 0; t < T; ++t) {
        int W, H, N;
        scanf("%d%d%d", &W, &H, &N);
        double X, Y, R;
        scanf("%lf%lf%lf", &X, &Y, &R);
        double PI = 2 * acos(0.0);
        double res = 2 * PI;
        if (fabs(W - X) < R) {
            res -= 2 * acos((W - X) / R);
        }
        res *= R;
        printf("res = %.7lf\n", res);
        printf("cor = %.7lf\n", 2 * PI * R);
        printf("dif = %.7lf\n", fabs(2 * PI * R - res));
    }
    return 0;
}
 

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