// Properties of spheres of radii 1, 3, and 7 using function
#include <iostream>
#include <math.h>
using namespace std;
const double pi = 3.1416;

double r;

void Sphere() // defining a function
{
  // function's body
  double area, volume; // variables local to this function
  area = 4.*pi*r*r; 
  volume = 4./3.*pi*r*r*r;
  cout << r << ' ' << area << ' ' << volume << endl;
}

int main()  
{
  r=1.;
  {
    // function's body
    double area, volume; // variables local to this function
    area = 4.*pi*r*r; 
    volume = 4./3.*pi*r*r*r;
    cout << r << ' ' << area << ' ' << volume << endl;
  }
  
  r=3.;
  {
    // function's body
    double area, volume; // variables local to this function
    area = 4.*pi*r*r; 
    volume = 4./3.*pi*r*r*r;
    cout << r << ' ' << area << ' ' << volume << endl;
  }
  
  r=7.;
  {
    // function's body
    double area, volume; // variables local to this function
    area = 4.*pi*r*r; 
    volume = 4./3.*pi*r*r*r;
    cout << r << ' ' << area << ' ' << volume << endl;
  }
}