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UVA Problem 10573 Solution

Problem Solving, UVa

 

 

#include <bits/stdc++.h>

#define PI 2*acos(0)



using namespace std;



int main()

{

    int n,tc,i,j;

    char t[2];

    cin>>tc;

    while(tc--)

    {

        int a,b;

        cin>>a;

        if(getchar()=='\n')

       {

        printf("%.4lf\n", (2*a*a*PI)/16);

        }

        else

        {

        cin>>b;

        printf("%.4lf\n", 2*a*b*PI);

        }

    }

    return 0;

}

 

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