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UVA Problem 10678 (The Grazing Cow) Solution

Problem Solving, UVa

 

 

#include <bits/stdc++.h>

#define PI 2*acos(0)

using namespace std;



int main()

{

  

   double d,l,D,L,i,r1,r2;

   int tc;

   double ans;

   cin>>tc;

    while(tc--)

    {

        cin>>D>>L;

        d=D/2.0;

        l=L/2.0;

        r1=sqrt((L/2 * L/2) - (D/2 * D/2));

        printf("%.3f\n",PI*r1*l);

    }   

    return 0;

}

 

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