uri 1760 solution in cpp

 

uri 1760 solution in cpp

by ujjal roy

#include<bits/stdc++.h>

using namespace std;

main()

{

     int n;

     double r;

     while(cin>>n)

     {

         r=sqrt(3)/4*n*n*1.6;

         cout<<fixed<<setprecision(2)<<r<<endl;

     }

    return 0;

}