Who knoes the answer of this:

In the Hotel lodge, your nightly hotel price gets you a bedroom and a bathroom. Each room is perfectly square. If you take the length of one of the walls of the bedroom, and subtract the length of one of the walls of the bathroom, you'll find that the difference is 9 metres. Now, if you multiply the length of the bedroom wall by the length of the bathroom wall, you'll find that the product is 12 square metres.

What is the total area, in square metres, of the bedroom plus the bathroom? Round to the nearest whole number, if necessary.

Thanks for the answer! :)