find area of square and rectangle

class p8
{
    public static void main(String args[])
    {
        double s=13;
        double area=s*s;
        System.out.println("Area of Square is "+area);

        double width=10.5;
        double length=20;
        double rarea=width*length;
        System.out.println("Width "+width);
        System.out.println("Lenght "+length);
        System.out.println("Area of Rectangle is "+rarea);
    }
}