1. Rectangle

public class Rectangle {
    private double length;
    private double width;
    private String name;

    public Rectangle(double length, double width, String name){
        this.length = length;
        this.width = width;
        this.name = name;
    }

    public double radius() {
        return 0.5 * Math.sqrt(length * length + width * width);
    }

    public void resize (double x ,double y) {
        this.width = width * y;
        this.length = length * x;
    }

    public String toString() {
        return String.format("Rectangle %s, width: %f, length: %f", this.name, this.width, this.length);
    }
}