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#include<iostream.h>
class Shape
{public:
Shape(){}
~Shape(){}
virtual float GetArea(){return -1;}
};
class Circle:public Shape
{public:
Circle(float radius): itsRadius(radius){}
~Circle(){}
double GetArea(){return 3.1415926*itsRadius*itsRadius;}
private:
float itsRadius;
};
class Ractangle:public Shape
{
public:
Rectangle(float len,float width):itsLength(len),itsWidth(width){};
~Rectangle(){};
virtual float GetArea(){return itsLength*itsWidth;}
virtual float GetLength(){return itsLength;}
virtual float GetWidth(){return itsWidth;}
private:float itsWidth; float itsLength;
};
class Square:public Rectangle
{
public:Square(float len);
~Square(){}
};
Square::Square(float len):
Rectangle(len,len){}
int main()
{
Shape*sp;
sp=new Circle(5);
cout<<"The area of the Circle is"<&l

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