Q1. Write a C++ code that has two classes. (Friend class) First one named "Rectangle" and has following data members; Length (integer type) Width (integer type) A constructor to assign Length = 10 and Breadth = 20. > Second class named Rectangle_Area and has following data member; Area (integer type) Functions : void calcArea(Rectangle R) calculates the area of the rectangle using the Length and Breadth values from the other class. void displayArea(Rectangle Rect) displays the length, breadth and area values. Rectangle_Area class should be the friend class of the Rectangle class. In your main function, create objects for two classes and call the functions. SAMPLE RUN: Length : 10 Width : 20 Area : 200