A traffic sign in the shape of a square with each side equal to 20 inches. What is the area of the sign and square inches
The area of a square is calculated by multiplying the length of one of its sides by itself.
In this case, since each side of the square is equal to 20 inches, we can calculate the area as follows:
Area = side length * side length = 20 inches * 20 inches = 400 square inches.
Therefore, the area of the sign is 400 square inches.