15. Gimli works for a painting company that will be painting a room that has the following width and height measurements for each wall: Wall Height Width (m) (m) 18.7 4.2 19.2 3.5 W N 13.4 3.0 4 15.8 3.5 Paint is sold by the gallon and costs $46.78 per gallon. Each gallon can of paint can cover an area of 450 ft- a. Determine the total area, in square feet, of the walls of the room. [2 marks] b. Exactly how many gallons of paint is required to paint this area? [1 mark] c. Determine how many cans of paint Gimli will need to purchase to complete the job. [1 mark]