using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("*** Painting Calculator ***");

        Console.WriteLine();

        Console.WriteLine("This application will calculate the area and coat to paint rectangle, circle, triangle, and hexagon shapes that have been drawn on the asphalt of the school yard.");

        //Call methods for each shape

        RectangleCalculations();

        CircleCalculations();

        TriangleCalculations();

        HexagonCalculations();

    }

​

     static void RectangleCalculations()

    {

        Console.WriteLine("\n*** Rectangle ***");

        //User inserts dimensions

        Console.Write("\nEnter the length of the rectangle in metres:");

        double length = Convert.ToDouble(Console.ReadLine());

        Console.Write("\nEnter the width of the rectangle in meters:");

        double width = Convert.ToDouble(Console.ReadLine());

        //To calculate area

        double area = length * width;

        Console.WriteLine("\nThe area to paint is " + ((length * width)) + "m\u00B2.");

        //To calculate the amount of paint needed, 1 litre covers 10m^2

        double paintNeeded = area / 10;

        Console.WriteLine("\nYou will need " + paintNeeded + " litres of paint.");

        Console.WriteLine();

        //Price per litre

        Console.Write("Enter the cost per litre of paint in dollars (between $15 and $25):");

        double pricePerLitre = Convert.ToDouble(Console.ReadLine());

        //Total cost

        double totalCost = Math.Round(paintNeeded * pricePerLitre, 1);

        Console.WriteLine($"\nThe total cost to paint the rectangle is: ${totalCost}.");

        Console.WriteLine();

    }

    static void CircleCalculations()

    {   

        Console.WriteLine("*** Circle ***");

        //User inserts dimensions

        Console.Write("\nEnter the radius of the circle:");

        double radius = Convert.ToDouble(Console.ReadLine());

        double area = Math.PI * Math.Pow(radius, 2);

        area = Math.Round(area,1);

        Console.WriteLine("\nThe area of a circle with a radius of " + radius + "m is " + area + "m\u00B2");

         //Calculations of amount of paint needed

        double paintNeeded = Math.Round(area / 10, 1);

        Console.WriteLine($"\nYou will need {paintNeeded} litres of paint.");

​

        Console.Write("\nEnter the cost per litre of paint in dollars (between $15 and $25): ");

        double pricePerLitre = Convert.ToDouble(Console.ReadLine());

​

        //Total cost

        double totalCost = Math.Round(paintNeeded * pricePerLitre, 1);

        Console.WriteLine($"\nThe total cost to paint the circle is: ${totalCost}.\n");

​

    }

    static void TriangleCalculations()

    {

        //User inserts dimensions

        Console.WriteLine("*** Triangle ***");

        Console.Write("\nEnter the base of the triangle:");

        double baseLength = Convert.ToDouble(Console.ReadLine());

        Console.Write("\nEnter the height of the triangle in metres: ");

        double height = Convert.ToDouble(Console.ReadLine());

​

        //Area

        double area = Math.Round(0.5 * baseLength * height, 1);

        Console.WriteLine($"\nThe area to paint is {area}m\u00B2.");

​

        //Calculation of amount of paint needed

        double paintNeeded = Math.Round(area / 10, 1);

        Console.WriteLine($"\nYou will need {paintNeeded} litres of paint.");

​

        Console.Write("\nEnter the cost per litre of paint in dollars (between $15 and $25): ");

        double pricePerLitre = Convert.ToDouble(Console.ReadLine());

​

        //Total cost

        double totalCost = Math.Round(paintNeeded * pricePerLitre, 1);

        Console.WriteLine($"\nThe total cost to paint the triangle is: ${totalCost}.\n");

    }

    static void HexagonCalculations()       

    {

        //User inserts dimensions

        Console.WriteLine("*** Hexagon ***");

        Console.Write("\nEnter the side length of the hexagon:");

        double sideLength = Convert.ToDouble(Console.ReadLine());

​

        //Area

        double area = Math.Round((3 * Math.Sqrt(3) * Math.Pow(sideLength, 2)) / 2, 1);

        Console.WriteLine($"\nThe area to paint is {area}m\u00B2.");

​

        //Calculation of amount of paint needed

        double paintNeeded = Math.Round(area / 10, 1);

        Console.WriteLine($"\nYou will need {paintNeeded} litres of paint.");

​

        Console.Write("\nEnter the cost per litre of paint in dollars (between $15 and $25): ");

        double pricePerLitre = Convert.ToDouble(Console.ReadLine());

​

        //Total cost

        double totalCost = Math.Round(paintNeeded * pricePerLitre, 1);

        Console.WriteLine($"\nThe total cost to paint the hexagon is: ${totalCost}.\n");

    }

}

​

​