NEED HELP CALCULATING VOLUME OF SPHERE?

[3CGE8vqX]

The answer is really off, I think it has to do with the way I'm setting up the pi or the 4/3 part but I don't know how to fix it..

#include <conio.h>
#include <math.h>
#include <iostream.h>
#include <iomanip.h>

int main ()
{


double pi = 3.14159;
int r;

cout << "What is the length of the radius?" << endl;
cin >> r;
cout << "The volume of the sphere is " << 4/3*pi*pow(r, 3) << " units^3" << endl;



return 0;

}


Any help would be great thanks!!!

[bryan787]

#include <conio.h>
#include <math.h>
#include <iostream.h>
#include <iomanip.h>

int main ()
{


float pi = 3.14159;
float r;

cout << "What is the length of the radius?" << endl;
cin >> r;
cout << "The volume of the sphere is " <<(4.0/3)*pi*pow(r, 3) << " units^3" << endl;



return 0;

}

[3CGE8vqX]

Thank you so much :)