Deaconess, this is the solution:
If Mr. Dudzic is planning to paint just the walls of his living room, therefore:
• He won't need to know the volume of the rectangular prism
,• He won't need to know the perimeter of the room
,• He won't need to know the surface area of the entire room, including ceiling and floor
,• He just need to know beforehand the surface area of the walls
Correct answer D.
