7.6.D.20 - Real-World Area Problems – Exit Ticket

A homeowner called in a painter to paint the bedroom walls and ceiling. The bedroom is 18 ft. long, 12 ft. wide, and 8 ft. high. The room has two doors each 3 ft. by 7 ft. and three windows each 3 ft. by 5 ft. The doors and windows do not have to be painted. A gallon of paint can cover 300 ft 2. A hired painter claims he will need 4 gallons. Show that the estimate is too high.