A painter is going to paint a room shaped like a cube, with square walls that are 20 ft. on each side. A gallon of paint can be used to cover 400 square feet. How many gallons of paint should the painter guy if he is going to paint the four walls of the room?(1 point) Responses 1 gallon 1 gallon 6 gallons 6 gallons 5 gallons 5 gallons 4 gallons
The painter needs to paint all four walls of the room. Since each wall is a square with sides measuring 20 ft, the area of each wall is 20 ft * 20 ft = 400 square feet.
To find the total area of all four walls, we multiply the area of one wall by 4: 400 square feet * 4 = 1600 square feet.
Since a gallon of paint can cover 400 square feet, the painter needs 1600 square feet / 400 square feet/gallon = 4 gallons of paint.
Therefore, the painter should use 4 gallons of paint.