class circle
{
    int x, y; // center coordinates
    double radius;
    circle(int a, int b, int r) {x=a;y=b;radius=r;}
    double area() {return Math.PI*radius*radius;}
    double circumference() {return Math.PI*radius*2;}
    double distance(circle other) {
        int dx = x-other.x, dy = y-other.y;
        return Math.sqrt(dx*dx + dy*dy);
    }
}

class rectangle
{
    int x, y; // coordinates of upper-left corner
    double width, height;
    rectangle(int a, int b, double w, double h) {
        x=a; y=b; width=w; height=h;
    }
    double area() { return width*height; }
    double circumference() { return width*2 + height*2; }
    double distance(rectangle other) {
        int dx = x-other.x, dy = y-other.y;
        return Math.sqrt(dx*dx + dy*dy);
    }
}
// ... triangle, etc

public class shapes1
{
    public static void main(String[] args) {
        circle C[] = new circle[2];
        rectangle R[] = new rectangle[2];
        C[0] = new circle(3,4,5);
        C[1] = new circle(50,60,10);
        R[0] = new rectangle(3,4,5,6);
        R[1] = new rectangle(30,40,50,60);
        double totalarea = 0;
        for(var c:C) totalarea+=c.area();
        for(var r:R) totalarea+=r.area();
        System.out.printf("totalarea = %.2f\n",totalarea);
    }//main
}