If the room is square, 15-ft long and 15-ft wide, then the areas of the
floor and ceiling are 225 square feet each.
In order to calculate the arera of the walls, we would have to know
the height of the ceiling above the floor.
225 square feet.
15 feet -times- 19 feet = 285 square feet.
There are 270 square feet in a 15'x18' room.
75 square feet.
Assuming you mean the room is 15 feet by 9 feet - 135 square feet.
16' x 15' = 240 square feet.
225 square feet.
17 multiplied by 15 = 255. So, there are 255 square feet in that room.
15 feet -times- 19 feet = 285 square feet.
There are 270 square feet in a 15'x18' room.
There are: 15*13 = 195 square feet
38 x 15 = 570 square feet.
450 square feet.
450 square feet.
150 square feet.
75 square feet.
225 square feet (15 x 15 = 225).