a gallon of latex paint can cover 500 square feet. maria has a rectangular room whose dimensions are 14 feet by 25 feet, with 7-foot ceilings. how many gallon containers of paint does she need to buy to paint two coats on each wall?
First find the areas of the walls 14 x 7 and 25 x7 (there are TWO of each of these walls)
Sum up the areas you found above
Now DOUBLE this sum (she wants TWO coats of paint) = TOTAL SUM AREA
TOTAL SUM AREA / 500 ft2/gal = # gallons required.....