The document describes an object-oriented class hierarchy for shapes. It defines abstract Shape and TwoDimensional and ThreeDimensional classes. TwoDimensional contains area and circumference methods while ThreeDimensional contains surface area and volume methods. Specific subclasses like Triangle, Rectangle, Circle, Box, Cone, and Sphere are defined with their geometric formulas. The task is to implement this class hierarchy in Java, including default constructors, destructors, access methods and required functions for each class, and write a test program to create objects of each child class.

1. Object Oriented Programming
OOP

2. Consider the following class hierarchy:
● The classes Two-dimensional and Three-dimensional should be defined as
abstract classes, under the super class “Shape”.
● toString() should be defined for each Figure to return the “Type of Figure”
and the relevant data for that class as String.
● The class Two-dimensional contains the methods getArea() and
getCircumference().

3. where
Triangle:
Area = ½ * Base * Height
Circumference = Side1 + Side2 + Side3
Rectangle:
Area = Height * Width
Circumference = 2* (Height + Width)
Circle:
Area = pi * Radius * Radius
Circumference = 2* Pi * Radius
● The class Three-dimensional contains the methods
getSurface() and getVolume().
where
Box:
Surface= 2*(Height * Width + Width * Length
+ Length * Height)
Volume= Height * Width * Length
Cone:
Surface= 2 * pi * Radius (Radius + Height)
Volume= 1/3 * pi * Radius * Radius * Height
Cylinder:
Surface= 2 * pi * Radius (Radius + Height)
Volume= pi * Radius * Radius * Height
Sphere:
Surface= 4 * pi * Radius * Radius
Volume= 4/3 * pi * Radius * Radius * Radius

4. ●Implement the above classe in Java
(Include default constructors, destructors, access
methods and other functions required for the above
classes) (70 marks)
●Write a test program to test the above classes by creating
objects for each child classes.
(30 marks)