Design a class named Rectangle with two private data members: length and width. Define constructors and a destructor for the class and write member functions to find the perimeter and area of a rectangle. Then define a class named Cuboid (representing a box) that inherits from the class Rectangle with an extra data member: height. Then write constructors and a destructor for the Cuboid class, and write member functions to find the surface and volume of the Cuboid objects.

C- Create the sub class UsedBook  that is derived from the super class Book and has the following instance variables, constructor, and functions: title ( String) isbn ( String) authors (String) publisher (String) edition ( int) published_year (int) price_new (double) // the price of the book if it is new age (int)  // how old the book is in years Constructor that takes all of the above variables as input parameters.  set/get functions calculate_price method // the price is calculated as  price_new * (1- 0.10*age) print function that prints all information related to the old book.   D- Create the Testing class that has the main method and does the following: aa- Use the constructor to create instance of NewBook class and name it as new. Call compute_price function. bb- Use the constructor to create instance of  usedBook class and name it used. Call compute_price function. cc- Print the related information of new and used objects using print functions. Use this following code:   class…

In Chapter 10, the class clockType was designed to implement the time of day in a program. Certain applications, in addition to hours, minutes, and seconds, might require you to store the time zone. Derive the class extClockType from the class clockType by adding a member variable to store the time zone. Add the necessary member functions and constructors to make the class functional. Also, write the definitions of the member functions and the constructors. Finally, write a test program to test your class.

Model a room class, whose member data is three integers length, width and height. The classcontains two constructors to initialize the room class objects, first is no argumentconstructor, while the second in three arguments constructor. Class also contains threemember functions i.e., getdatat) to get the data from user and store in the memory of callingobject and showdata) to show the room data of calling object, int volume(int I, int w, int h)function should receive the length, width and height values from the objects one by one andreturn the volumes of the three objects respectively.Write a main program to declare the three object rl, 12, and 13 of room class. Two objectwill store the values through three argument constructor and third object will get the datafrom user by calling getdata function. Then all three objects should call the volumefunctions to calculate their volumes and store them in three variables of type integer. Finallythe system compare the three volumes values…