1043 - Triangle Partitioning

#include<bits/stdc++.h>
using namespace std;
 
int main()
{
    int T,c=1;
    double AB,AC,BC,m;
//    freopen("check.txt","r",stdin);
    scanf("%d",&T);
    while(T--)
    {
        scanf("%lf%lf%lf%lf",&AB,&AC,&BC,&m);
        printf("Case %d: %.10lf\n",c++,sqrt((AB*AB*m)/(m+1)));
    }
    return 0;
}