a painter 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)
To find out how many gallons of paint the painter needs, we first need to calculate the total area of the four walls.
Each wall is a square with 20 ft sides, so the area of each wall is 20 ft * 20 ft = 400 square feet. Since there are four walls, the total area of the four walls is 400 square feet * 4 = 1600 square feet.
Now, we need to determine how many gallons of paint can cover this total area. We know that one gallon of paint can cover 400 square feet, so to cover 1600 square feet, the painter needs 1600 square feet / 400 square feet per gallon = 4 gallons of paint.
Therefore, the painter needs 4 gallons of paint to cover the four walls of the room.