A cleaner charges $0.50 per square foot to polish wood floors. a school hall has a floor area of 30 feet by 50 feet. what would be the total cost to polish the the floor of the school hall?
First calculate the area of the floor, this would be 30*50 = 1500 square feet Now multiply the area by the cost for each square foot, so 1500*0.5 = $750
