To calculate the square footage of a room, you multiply its length by its width. For a room that is 15 feet by 26 feet, the square footage is 15 x 26 = 390 square feet.
250 square foot
28
5
165 square feet
7.25 square metres.
250 square foot
28
5
60 square feet
108 square feet
141.75
9.2 square meters.
7.25 square metres.
165 square feet
13.93 square meters.
130 square feet
A room measuring 20' x 20' = 400 square feet