a traffic sign is in the shape of a square with each side equal to 20 inches, what is the area of the traffic sign in square inches?
The area of a square is calculated by squaring the length of one of its sides. In this case, each side is 20 inches, so the area of the square traffic sign would be:
Area = side length^2
Area = 20^2
Area = 400 square inches
Therefore, the area of the traffic sign is 400 square inches.