Question

Create a Ruby class Cylinder. Each cylinder is characterized by the instance variables radius and height. For this class the initializer/constructor and the method volume that returns the volume of the cylinder. For this class the initializer/constructor and the method area that returns the area of cylinder.

Create a class Can that inherits properties from the class Cylinder and adds new instance variablescontents(e.g. beer, Pepsi, Coke) and price(real number).

Initialize an array of cans and write Ruby code necessary to display all data about the can that has the maximum value of the volume/price ration. (Hint: @ration can be an instance variable of the class can)

Answer 1

class Cylinder

  
    def initialize(radius,hight)
        @radius=radius
        @hight=hight
      
        puts "Radius is=",radius
        puts "Hight is=",hight
      
    end
    def volume
        3.14*(@radius*@radius)*@hight
      
      
    end
  
    def area
        (2*3.14*@radius*@hight) + (2*3.14*(@radius*@radius))
      
      
    end
end

x=Cylinder.new(2,5)
vol=x.volume
area=x.area
puts "volume of cylinder=#{vol}"
puts "area of cylinder=#{area}"