A rectangular hat box has a volume of 5,184 cubic inches. The box is 2 feet long by 18 inches wide. What is the hat box's height?

The volume of a rectangular box equals the multiplication of its length times its width times its height, so we have:

v = length*width * height

plug in the data we have:

5184 = 2*18*height

5184 = 36*height

solve for height:

height = 5184/36

height = 144

hence the height is 144 feet