Question

1: Create a class Circle

2: Create two instances of the Circle class

1: Based on Program 13-1 (see attachment Pr13-1.cpp) in the textbook, create a class name “Circle” with the following declarations (hint: you can use PI=3.14):

//Circle class declaration

class Circle

{

private:

double radius;

public:

void setRadius(double);

double getRadius() const;

double getArea() const;

double getPerimeter() const;

};

2: Based on Program 13-2 (see attachment Pr13-2.cpp) in the textbook, create two instances of the Circle class, pizza1 and pizza2, which can have different size (radius). Calculate and show the areas of each pizza, also the total area of both pizzas combined. You should put your answers for Q1 and Q2 into one program.

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

//completed program

#include<iostream>

using namespace std;

//Circle class

class Circle

{

private:

double radius;

public:

void setRadius(double);

double getRadius() const;

double getArea() const;

double getPerimeter() const;

};

//implementation of all methods in Circle class

void Circle::setRadius(double rad){

                //setting radius to rad

                radius=rad;

}

double Circle::getRadius() const{

                //returns the radius

                return radius;

}

double Circle::getArea() const{

                //area=PI*r*r

                double area=3.14*radius*radius;

                return area;

}

double Circle::getPerimeter() const{

                //perimeter=2*PI*r

                double peri=2*3.14*radius;

                return peri;

}

int main(){

                //creating two Circle objects

                Circle pizza1;

                Circle pizza2;

                //setting different radii to each circle

                pizza1.setRadius(50);

                pizza2.setRadius(20);

                //displaying area of pizza1, pizza2 and pizza 1 & 2 combined

                cout<<"Area of Pizza 1: "<<pizza1.getArea()<<endl;

                cout<<"Area of Pizza 2: "<<pizza2.getArea()<<endl;

                cout<<"Area of Pizza 1 and 2 combined: "<<(pizza1.getArea()+pizza2.getArea())<<endl;

                return 0;

}

/*OUTPUT*/

Area of Pizza 1: 7850

Area of Pizza 2: 1256

Area of Pizza 1 and 2 combined: 9106