Company A is an e-commerce store selling rugs online

Company A is an e-commerce store selling rugs online. Company A wants to charge based on the size of rugs provided by the customer.
In backend, show product-wise option to enable/disable this functionality and field to specify price per sq. meter.
Show form on product page to enter height and width in meter. Calculate product price based on below formula and set it as final price while product add to cart.

=> Formula:

Final Price = Product Price + (height * width) * Price per sq. meter