The answers would be A, and B. Think about it in terms of you paying for the bagel and coffee. You would want your change back and you would want the correct amount back, because you gotta buy those gummy bears.
The formula for volume is width * height * length or w*h*l. to do this problem you have to do 8*6*10 which is 480. so, the volume of the room is 480 ft^3 (cubed).
