#include <iostream>
#include <cmath>
using namespace std;
int main() {
int creditHours; // variable for credit hours//
int hoursShouldStudy; // variable for equation of hours they should study //
int hoursActualStudy; // variable for the actual amount of hours the person studies //
double stadiumSize; // variable for the stadium size equation //
double ballCircumference; // variable for the ball circumference equation //
int numPlayers; // variable for the number of players//
double playerMin;// variable for the amount of minutes each player can play equation //
cout << "Enter The Amount of Credit hours are you taking this Semsemester." << endl; //asking the user to enter they're credit hour amount //
cin >> creditHours; // inputing the number//
hoursShouldStudy = creditHours * 3; // equation for determining the amount of study hours//
cout << "You should be studying " << hoursShouldStudy << " hours." << endl << endl; // outputting the solution to the equation above//
cout << "Please enter how many hours you study for." << endl; // asking the user for the amount of hours they actually study//
cin >> hoursActualStudy; // inputing amount of hours//
cout << "The difference between how much you should study and how much you study is " << hoursShouldStudy - hoursActualStudy << " hours." << endl << endl; // outputting the solution by taking the hours the person should study and subtracking it from how much they actually study//
stadiumSize = (105.0 * 68.0) * 0.3048; // stadium size equation that calulates the size from meters to feet//
cout << "The size of the stadium in feet is " << stadiumSize << " ft." << endl << endl; //outtputing the size of the stadium in feet//
ballCircumference = M_PI * 22; // equation for the circumference of the ball//
cout << "The circumference of the ball is " << ballCircumference << " cm." << endl << endl; // outputting the equation of the ball//
cout << "Please enter the number of players you have." << endl; // asking the user to enter the number of players that are on the team //
cin >> numPlayers; // inputting the number of players //
playerMin = 90.0 / numPlayers; // Then equation for the amount of minutes that each player can play//
cout << "Everyone should be able to play " << playerMin << " minutes." << endl; // outputting the number of minutes each player can play //
return 0;
}