John's room is shaped like a box. it has a flat ceiling that is a rectangle that is 14 feet long and 9 feet wide and the walls are 7 feet high. it has one door that is 6 feet high and 3 feet wide. it has two windows that are each 5 feet high and 42 inches wide. john wants to paint the walls and ceiling, but not the door or windows. he can paint 100 square feet with a quart of paint and paint costs $3.50 per quart. he has to buy whole quarts and may have some paint left over.