package class3_3_Loops;

import javax.swing.JOptionPane;

public class Gui {
    public static void main(String[] args) {
        String radiusStringCm = JOptionPane.showInputDialog(
                "Please enter the radius (cm):");
        int radiusCm = Integer.parseInt(radiusStringCm);
        double areaCm2 = Math.PI * radiusCm * radiusCm;
        JOptionPane.showMessageDialog(null, "You entered: "
                                + radiusStringCm +
                                "\nThe area is: " + areaCm2 + " cm^2");
    }
}