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 ft. wide, and 9 ft. high, find the surface area of the room that you are going to paint, including the floor and ceiling
Surface area of the walls:
- Two walls that are 20 ft. long by 9 ft. high = 2(20 ft. x 9 ft.) = 360 sq. ft.
- Two walls that are 15 ft. long by 9 ft. high = 2(15 ft. x 9 ft.) = 270 sq. ft.
Surface area of the floor:
- 20 ft. long by 15 ft. wide = 20 ft. x 15 ft. = 300 sq. ft.
Surface area of the ceiling:
- 20 ft. long by 15 ft. wide = 20 ft. x 15 ft. = 300 sq. ft.
Total surface area to be painted:
360 sq. ft. + 270 sq. ft. + 300 sq. ft. + 300 sq. ft. = 1,230 sq. ft.
Therefore, Monica will need to paint a total surface area of 1,230 square feet for her bedroom makeover.