ShapesThings.java
package shapes;

import shapes.SSquare;
import shapes.SCircle;

public class ShapesThings {
    public static void main (String[] args) {
        SSquare Square = new SSquare(400);
        System.out.println("square = " + Square.toString());
        System.out.println("area of square = " + Square.area());
        System.out.println("perimeter of square =" + Square.perimeter());
        System.out.println("diagonal of square = " + Square.diagonal());

        SCircle disk = Square.inscribingCircle();
        System.out.println("disk = " + disk.toString());
        System.out.println("area of disk = " + disk.area());
        System.out.println("perimeter of disk =" + disk.perimeter());

        SSquare diamond = disk.inscribingSquare();
        System.out.println("diamond = " + diamond.toString());
        System.out.println("area of diamond = " + diamond.area());

    }
}