The statement “The mechanical advantage of a compound
machine is equal to the one simple machine that has the greatest mechanical
advantage” is TRUE. I am hoping that this answer has satisfied your
query and it will be able to help you in your endeavor, and if you would like,
feel free to ask another question.
The scale is talking about how if on the model it states the wall is 1 foot you would make it 44 feet The windows and doors are just there to make sure you don’t forget them. Hope this helped! :D