Answer:
16 square feet.
Explanation:
To find the area of the wall that Adam has to paint, you can use the formula for the area of a rectangle, which is:
Area = Width × Height
In this case, the width of the wall is 4 feet, and the height of the wall is also 4 feet. So, you can simply plug in these values into the formula:
Area = 4 feet × 4 feet = 16 square feet
So, the area of the wall Adam has to paint is 16 square feet.