Oh, dude, math time! So, to find the square footage of a room, you just multiply the length by the width. In this case, 20 feet x 11 feet gives you 220 square feet. It's like basic multiplication, but for grown-ups who need to know how much carpet to buy.
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To find the square footage of a room, you simply multiply the length by the width. In this case, a room that is 20 feet long and 11 feet wide would have a total square footage of 220 square feet (20 x 11 = 220).
There are 220 sq feet on the floor, and another 220 sq feet on the ceiling.
There are also a lot more sq feet on the walls, but we can't total them up
without knowing the height of the room.
220
A room measuring 20' x 20' = 400 square feet
Imagine a room that measures 25 feet by 20 feet. The area of the floor in that room is 25 X 20 or 500 square feet.
20 ft x 20 ft = 400 square ft
280 square feet.