12. LandTract Class (C++ must work with Visual Studio 2017) Make a LandTract class that is composed of two FeetInches objects, one for the tracts length and one for the width. The class should have a member function that returns the tracts area. Demonstrate the class in a program that asks the user to enter the dimensions for two tracts of land. The program should display the area of each tract of land and indicate whether the tracts are of equal size.