Assignment

 import java.util.Scanner;

public class Kelculator {

           // Method to calculate area of a circle

    public static void calculateCircleArea(double radius) {

        double area = Math.PI * radius * radius;

        System.out.println("The area of the circle is: " + area);

    }

    // Method to calculate area of a square

    public static void calculateSquareArea(double side) {

        double area = side * side;

        System.out.println("The area of the square is: " + area);

    }

    // Method to calculate area of a rectangle

    public static void calculateRectangleArea(double length, double width) {

        double area = length * width;

        System.out.println("The area of the rectangle is: " + area);

    }

    // Method to calculate area of a triangle

    public static void calculateTriangleArea(double base, double height) {

        double area = 0.5 * base * height;

        System.out.println("The area of the triangle is: " + area);

    }

    // Method to calculate area of a trapezoid

    public static void calculateTrapezoidArea(double base1, double base2, double height) {

        double area = 0.5 * (base1 + base2) * height;

        System.out.println("The area of the trapezoid is: " + area);

    }

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.println("Choose a shape to calculate area:");

        System.out.println("1. Circle");

        System.out.println("2. Square");

        System.out.println("3. Rectangle");

        System.out.println("4. Triangle");

        System.out.println("5. Trapezoid");

        System.out.print("Enter the number of your choice: ");

        int choice = scanner.nextInt();

        switch (choice) {

            case 1: // Circle

                System.out.print("Enter the radius of the circle: ");

                double radius = scanner.nextDouble();

                calculateCircleArea(radius);

                break;

            case 2: // Square

                System.out.print("Enter the side length of the square: ");

                double side = scanner.nextDouble();

                calculateSquareArea(side);

                break;

            case 3: // Rectangle

                System.out.print("Enter the length of the rectangle: ");

                double length = scanner.nextDouble();

                System.out.print("Enter the width of the rectangle: ");

                double width = scanner.nextDouble();

                calculateRectangleArea(length, width);

                break;

            case 4: // Triangle

                System.out.print("Enter the base length of the triangle: ");

                double base = scanner.nextDouble();

                System.out.print("Enter the height of the triangle: ");

                double height = scanner.nextDouble();

                calculateTriangleArea(base, height);

                break;

            case 5: // Trapezoid

                System.out.print("Enter the length of the first base of the trapezoid: ");

                double base1 = scanner.nextDouble();

                System.out.print("Enter the length of the second base of the trapezoid: ");

                double base2 = scanner.nextDouble();

                System.out.print("Enter the height of the trapezoid: ");

                double heightTrapezoid = scanner.nextDouble();

                calculateTrapezoidArea(base1, base2, heightTrapezoid);

                break;

            default:

                System.out.println("Invalid choice. Please select a number between 1 and 5.");

        }