imagine two rectangles representing his bedroom and closet
the bedroom rectangle is 12 * 14 feet, the closet rectangle is 2 * 8 ft.
to floor these rectangles, we need some amount of surface area of flooring
multiply them out to find their individual areas
12 * 14 = 168
2 * 8 = 16
add them
total area = 184
since we multiplied length by width, or like a square, and the units are feet, this is 184 square feet
hope this helps : )
jeron