a painter is going to paint a room shaped like a cube, with square walls that are 20 ft
To calculate the area of the walls that need to be painted, we need to find the total surface area of the cube.
Since all the walls are square and the same size, we can determine the area of one wall and then multiply it by 6 to get the total area.
The area of one wall is the length of one side (20 ft) multiplied by itself:
Area of one wall = 20 ft * 20 ft = 400 square feet
Since there are 6 walls in total for a cube, the total area to be painted is:
Total area = Area of one wall * Number of walls
Total area = 400 ft² * 6 = 2400 square feet.
So, the painter will need to paint a total area of 2400 square feet.