Help me in solving VADJ8V2 problem

My issue

i want solution

My code

class Codechef{
    public static void main(String[] args) {
        // Initialize variables
        double sideLength = 14.0;  // side length of the square
        double area;              // variable to store the area
        double paintCostPerSquareCm = 7.0;  // paint cost per square cm
        double cost;              // variable to store the cost of painting

        // Calculate the area of the square
        area = sideLength * sideLength;

        // Calculate the cost of painting the square
        cost = area * paintCostPerSquareCm;

        // Output the area and cost to the console on separate lines
        System.out.println("Area of the square with side length " + sideLength + " cm: " + area + "cm^2");
        System.out.println("Cost of painting the square: $" + cost);

Learning course: Placement preparation using Java
Problem Link: CodeChef: Practical coding for everyone