Explanation:
Length of house, l = 54 ft = 16.45 m
Breadth of house, b = 48 ft = 14.63 m
Height of house, h = 8 ft = 2.43 m
We need to find the volume of the interior of the house. The house is in the form of cuboid. The volume of cuboid is given by :



Since, 
or the volume of the interior of the house, 
Hence, this is the required solution.
After a careful reading of the question, I have concluded that it's a trick question, and that there IS no other one.
Because frame of reference decides are your forces positive or negative. It is important for the direction of motion.
You in college stop cheating