From the following UML class diagram, create all the classes specified in the diagram and test them with the
provided “TestProgram.cs”
Circle and Cylinder classes
Note: “public override double getArea() {…}” shall be used with the getArea() function in the Cylinder
class while, in the Circle class, there is no need to have the “override” keyword. This means that when calling the getArea()
function using a Cylinder object, the program will call the getArea() that belongs to the Cylinder not from Circle.