SOLUTION: A room 6 m by 5m is 4 m high. Allowing 15m^2 for a door and windows, how many gallons of paint is needed to paint is needed to paint the walls and ceiling if a gallon of paint can

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A room 6 m by 5m is 4 m high. Allowing 15m^2 for a door and windows, how many gallons of paint is needed to paint is needed to paint the walls and ceiling if a gallon of paint can       Log On


   



Question 556060: A room 6 m by 5m is 4 m high. Allowing 15m^2 for a door and windows, how many gallons of paint is needed to paint is needed to paint the walls and ceiling if a gallon of paint can cover 15m^2 of surface?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
You don't paint the floor, so surface area in m2 =
+6%2A5+=+30+ m2 for ceiling
+2%2A5%2A4+=+40+ m2 for 2 facing walls
+2%2A6%2A4+=+48+ m2 for the other 2 facing walls
The total area is +30+%2B+40+%2B+48+=+118+ m2
+118+%2F+15+=+67.867+ gallons
68 gallons of paint is needed