#include<iostream>
#include<cmath>
using namespace std
 
int main()
{
      float radius;
      float circumference;
      float area;
 
      cout << "Please enter the radius of the circle: ";
      cin >> radius;
      cout << endl;
 
      circumference = 2 * 3.1416 * radius;
      area = 3.1416 * radius * radius;
 
      cout << "Radius = " << radius << endl;
      cout << "Area = " << area << endl;
      cout << "circumference = " << circumference << endl;
} 

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