For Monica‘s 14th birthday she wants to make over her bedroom. The first phase in the bedroom makeover is painting her room if Monica‘s room is 20 feet long 15 feet wide and 9 feet high find the surface area of the room that you were going to paint including the floor and ceiling
Surface area of the walls:
2(20*9) + 2(15*9) = 360 + 270 = 630 square feet
Surface area of the floor:
20*15 = 300 square feet
Surface area of the ceiling:
20*15 = 300 square feet
Total surface area to paint:
630 (walls) + 300 (floor) + 300 (ceiling) = 1230 square feet
So, Monica will need to paint 1230 square feet in her bedroom makeover.