/* The program calculates the area of a triangle, circle, and rectangle * */ import java.util.Scanner; public class Areas { static Scanner key = new Scanner(System.in); public static void main(String[] args) { String choice; System.out.println("Which figure area would you like?"); do { System.out.println("t--triangle, c--circle, r--rectangle, e--exit"); choice = key.next(); if(choice.equals("t") || choice.equals("T")) { triangle(); } else if(choice.equals("c") || choice.equals("C")) { circle(); } else if(choice.equals("r") || choice.equals("R")) { rectangle(); } else if(choice.equals("e") || choice.equals("E")) { System.out.println("Thank you for using the program!!"); System.exit(0); } else { System.out.println("Invalid Input"); } }while(!choice.equals("e") || !choice.equals("E")); } public static void triangle() { System.out.println("Enter the base: "); double b = key.nextDouble(); System.out.println("Enter the height: "); double h = key.nextDouble(); double area = 0.5 * b * h; System.out.println("The area of the triangle is " + area + "\n"); } public static void circle() { System.out.println("Enter the radius: "); double r = key.nextDouble(); double area = 3.145*r*r; System.out.println("The area of the circle is " + area + "\n"); } public static void rectangle() { System.out.println("Enter the length: "); double l = key.nextDouble(); System.out.println("Enter the width: "); double w = key.nextDouble(); double area = l*w; System.out.println("The area of the rectangle is " + area + "\n"); } } /* The main idea of this program is to demonstrate the use of teamwork/groupwork Each member is responsible for a method, then by putting all the method together A unique program is built...... * */