Numerical Expressions Quick Check 3 of 53 of 5 Items Question 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 buy if he is going to paint the four walls of the room?(1 point) Responses 6 gallons 6 gallons 1 gallon 1 gallon 5 gallons 5 gallons 4 gallons 4 gallons

Question

Numerical Expressions Quick Check 3 of 53 of 5 Items Question 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 buy if he is going to paint the four walls of the room?(1 point) Responses 6 gallons 6 gallons 1 gallon 1 gallon 5 gallons 5 gallons 4 gallons 4 gallons

Answer 1

To find the total area of the four walls, we need to multiply the length of one side by the height of the walls and then multiply that by 4 (since there are four walls).

The length of one side of the cube is 20 feet, so the area of one wall is 20 ft * 20 ft = 400 square feet.
Therefore, the total area of the four walls is 400 sq ft * 4 = 1600 square feet.

Since each gallon of paint can cover 400 square feet, the painter will need 1600 sq ft / 400 sq ft/gal = 4 gallons of paint.

So the correct answer is 4 gallons.