Question

Joey is going to paint his room. His ceiling is 8ft high. The room is 12ft wide and 15ft long.

What is the total area of the walls?

I know that its 1440 but im not sure if its

a. 1440 ft^3
or
b. 1440 ft^2

Answer 1

See. A simple method is:
You got the answer by multiplying 15ft x 12 ft x 8ft which is equal to = 14400x ft x ft x ft = 1440ft^3

Answer 2

@Rohith15 knows what he is doing , I conclude with him :)

Answer 3

@Homeworked realized there is a problem with his answer because the problem is asking for an area, and according to his calculation, 15 ft * 12 ft * 8 ft = 1440 ft^3 which is a volume.

@Rohith15 calculated the volume of the room. His calculation of the volume is correct, length times width times height. V = LWH = 15 ft * 12 ft * 8 ft = 1440 ft^3.
The problem is that this is not what the question is asking.

The question here is what is the area of the walls.
Two walls measure 15 ft by 8 ft.
The other two walls measure 12 ft by 8 ft.
The total area of the walls is:
2 * 15 ft * 8 ft + 2 * 12 ft * 8 ft = 240 ft^2 + 192 ft^2 = 432 ft^2