黄宗禹第一次作业

public class Println{
    public static void main(String[] args)
    {
        System.out.println("    J    A    V     V    A");
        System.out.println("    J   A A    V   V    A A");
        System.out.println("J   J  AAAAA    V V    AAAAA");
        System.out.println(" J J  A     A    V    A     A");
    }
}

public class Circle{
   public static void main(String[] args)
   {
      double c=2 * 5.5 * Math.PI;
      double s=5.5 * 5.5 * Math.PI;
      System.out.println("The circumference of a circle is "+c);
      System.out.println("The area of the circle is "+s);
   }
}

public class Average{
   public static void main(String[] args)
   {
      double a=(1*60*60+40*60+35)/(60*60);
      double b=24*1.6;
      double c=b/a;
      System.out.println("His average speed is "+c+"km/h");
   }
}