Multiply the dimensions. 9x10 is 90 square feet.
240 square feet
162 square feet.
300 square feet.
There are 270 square feet in a 15'x18' room.
Assuming you mean the room is 15 feet by 9 feet - 135 square feet.
9x10=90sf
Ah, what a lovely question! To find the square footage of a room, you simply multiply the length by the width. So, for a 9x10 room, you would multiply 9 by 10 to get 90 square feet. Isn't that just delightful? Happy painting!
400 square feet.
16' x 15' = 240 square feet.
A simple rectangular room 20 feet by 18 feet has 360 square feet.
240 square feet
252 square feet.
120 square feet.
300 square feet.
162 square feet.
525 square feet.
A 10x14 room has an area of 140 square feet (10 feet x 14 feet = 140 square feet).