A traffic sign is in the shape of a square with each side equal to 20 inches. What is the area of the sign in square inches? (1 point)
The area of a square can be calculated by multiplying the length of one side by itself.
In this case, the side length of the square traffic sign is 20 inches.
Area = side length x side length
Area = 20 inches x 20 inches
Area = 400 square inches
Therefore, the area of the traffic sign is 400 square inches.