ad490a63c84a1701.js","7474","static/chunks/7474-49ba6ec3c1d01a28.js","8090","static/chunks/8090-30c82671ddf5b306.js","8115","static/chunks/8115-3670e99fee225168.js","2092","static/chunks/2092-3fbabbadb71f9617.js","3846","static/chunks/3846-54059dbba1733522.js","6517","static/chunks/6517-b17c38227fa0d2e6.js","766","static/chunks/766-12dbb05e2adf85ab.js","4150","static/chunks/app/courses/%5BcourseSlug%5D/lessons/%5BunitSlug%5D/page-1fc213a0f4568bd8.js"],"Image"] 3b:T7c0,#include #include // Define an abstract class Shape. Note that the abstractness is achieved by having at least one pure virtual function denoted by = 0 in the declaration. class Shape { public: virtual ~Shape() = default; // Adding a virtual destructor virtual double area() const = 0; // Pure virtual function for calculating the area virtual double perimeter() const = 0; // Pure virtual function for calculating the perimeter }; // Define a Circle class that inherits from Shape class Circle : public Shape { public: // Constructor to initialize the radius Circle(double radius) : radius(radius) {} // Implement the area and perimeter functions double area() const override { // Note, that the override keyword is optional return 3.14 * radius * radius; } double perimeter() const override { return 2 * 3.14 * radius; } private: double radius; }; // Define a Rectangle class that inherits from Shape class Rectangle : public Shape { public: // Constructor to initialize the width and height Rectangle(double width, double height) : width(width), height(height) {} // Implement the area and perimeter functions double area() const override { return width * height; } double perimeter() const override { return 2 * (width + height); } private: double width; double height; }; int main() { Circle circle(5); Rectangle rectangle(4, 6); std::cout << "Circle Area: " << circle.area() << ", Perimeter: " << circle.perimeter(