Surface Area Calculator

Length: Width: Height:

The length, width, and height of an object, and a button to calculate the surface area. The result or error message is displayed below the button. When the "Calculate" button is clicked, the calculate It retrieves the input dimensions, validates them, calculates the surface area using the formula 2 * (length * width + length * height + width * height), and up

dates the result or error message elements accordingly.