If each side of the square is 20-ft, then the area of the square is (20 x 20) = 400 square feet.
20ft * 15ft = 300 square feet.
Area of a circle in square feet = pi*radius2
20ft X 6.25ft = 62.5 ft2
assuming that you've measured the room in feet, then square area=Width x Length... so 12ft x 20ft = 240ft2
400 square feet
If that is 20ft by 20ft then there are 400 square feet
If the 18 stands for the radius, then the area formula : A= Pi r2 can be used. The question is standed strangely.
18ft*20ft = 360 square feet
Not sure which dimension is which. Normally, the square footage of a room is calculated from its length and width, and not height. However, this question gives depth! Is it a dungeon? Anyway, assuming that the depth is the height, the square footage is 20*15 = 300 sq ft
You don't. Its cubinc footage, not square footage.
In order to get the square footage you need to take 13' times 15' and you will get the square footage
1200