static void Main(string[] args)
{
double radius;
do
{
Console.WriteLine("Enter a radius: ");
string radiusInput = Console.ReadLine();
radius = double.Parse(radiusInput);
} while (radius < 0);
Console.WriteLine("The area of a circle of radius " + radius + " is: " + CircleFormulas.CircleArea(radius));
Console.WriteLine("The circumference of a circle of radius " + radius + " is: " + CircleFormulas.CircleCircumference(radius));
Console.WriteLine("The diameter of a circle of radius " + radius + " is: " + CircleFormulas.CircleDiameter(radius));
double milesPerGallon;
do
{
Console.WriteLine("Enter your car's miles per gallon: ");
string milesInput = Console.ReadLine();
milesPerGallon = double.Parse(milesInput);
} while (milesPerGallon < 0);
Console.WriteLine("It would take " + RoadTrip.GasNeeded(radius, milesPerGallon) + " gallons of gas to go around a circle with a radius of " + radius + ".");
}
public static double GasNeeded(double radius, double milesPerGallon)
{
double gasNeeded = CircleFormulas.CircleCircumference(radius) / milesPerGallon;
return(gasNeeded);
}