Inflate the balloon so that the diameter grows by an inch, and display the amount the volume has grown. Repeat that step: grow the diameter by another inch and show the growth of the volume.

Here is a typical program run:

Diameter: 10 Increase: 173 Increase: 208

Match the formatting of the sample program run in your solution.

```
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
const double PI = 3.14159265358979323846;
double diameter;
cout << "Diameter: ";
cin >> diameter;
double volume1 = PI * diameter * diameter * diameter / 6;
diameter++;
double volume2 = PI * diameter * diameter * diameter / 6;
double growth = volume2 - volume1;
cout << "Increase: " << setprecision(0) << fixed << growth << endl;
diameter++;
double volume3 = PI * diameter * diameter * diameter / 6;
growth = volume3 - volume2;
cout << "Increase: " << fixed << growth << endl;
return 0;
}
```