For example, the size of a 10 ft by 10 ft room (10x10 room) is 100 sq ft (102). Likewise, a 15x15 room is 225 sq ft (152), while a 20x20 room is 400 sq ft (202). However, perfectly square spaces are rarely encountered outside of classroom tasks. Square footage for a room...
The garage does not count towards the square footage of a house, as that is considered an unfinished space. A garage will only count towards the square footage