public class ComputeArea
{
   public static void main(String[] args)
   {
      double radius, area; // Define multiple variables of type "double"
  
      // (1) Assign a radius
      radius = 20;       // Assignment statement

      // (2) Compute area
      area = 3.14159 * radius * radius;  // Assignment statement

      // (3) Print result
      System.out.println(area);   // Print area to System.out (= terminal)
                         
   }                       
}