#include <iostream>
using namespace std;
int main ()
{
double pizzaDiameter;
int numSlices;
double area;
cout << "Pizza diameter: " ;
cin >> pizzaDiameter;
area = (pizzaDiameter/2.0) * (pizzaDiameter/2.0) * 3.14159;
numSlices = area/14.125;
cout << numSlices << " slices ";
}
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