Задача на языке Java

 public class Circle {
    public final double x;
    public final double y;
    public final double radius;

    public Circle(double x, double y, double radius) {
        this.x = x;
        this.y = y;
        this.radius = radius;
    }

    public double getLength() {
        return 2 * Math.PI * radius; // C = 2пR
    }
    
    public double getArea() {
        return Math.PI * radius * radius; // S = пR^2
    }

    public double getDistanceTo(Circle other) {
        double dx = this.x - other.x;
        double dy = this.y - other.y;
        return Math.sqrt(dx * dx + dy * dy);
    }

    public static void main(String[] args) {
        // Создаем круги
        Circle a = new Circle(2, 3, 5);
        Circle b = new Circle(3, 5, 8);
        // Делаем расчеты и тут же их выводим
        System.out.printf("C1 = %f, S1 = %f%n", a.getLength(), a.getArea());
        System.out.printf("C2 = %f, S2 = %f%n", b.getLength(), b.getArea());
        System.out.printf("Distance = %f%n", a.getDistanceTo(b));
    }
}