#include <iostream>
#include <math.h>
using namespace std;
const double pi = 3.1416;

void GetSphereProp(double r, double &a, double &v) 
// r represents the value 2.
// a represents the variable Area
// v represents the varaible Volume
{
  a = 4. * pi * r * r;        // assigning to variable Area
  v = 4./3. * pi * r * r * r; // assigning to variable Volume
}

int main()  
{
  double radius, Area, Volume;
  radius = 2.;
  GetSphereProp(radius , Area, Volume);
  // value of the variable radius passed to function
  // the variables Area, Volume passed to function
  cout << Area << ' ' << Volume << endl;
}