/******************************************************************
 * PieSliceArea.java provides a 'laboratory' for exploring basic GUIs.
 *
 * Written by: Charles Hoot, June 2000.
 * Written for: GUI Interlude 1 in "Hands On Java".
 *
 * Compute the area of a slice of pie given the pies radius
 * in inches and the angle of the pie slice in degrees
 ******************************************************************/

import ann.easyio.*;

public class PieSliceArea extends Object {

  static Screen theScreen = new Screen();
  static Keyboard theKeyboard = new Keyboard();

  public static void main(String args[]){
  	double pieArea, sliceArea, slice, radius;

  	theScreen.print("What is the radius of the pie (inches): ");
  	radius = theKeyboard.readDouble();
  	theScreen.print("What is the angle of the pie slice (degrees): ");
  	slice = theKeyboard.readDouble();

  	pieArea = Math.PI * radius * radius;  	// total area of the pie
  	sliceArea = pieArea * slice / 360;		// fractional area of the slice

  	theScreen.println("\n\nThe area of the slice in square inches is "
  		+ sliceArea);

  }
}