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 is found by multiplying the length of one side by itself.

In this case, each side of the square is equal to 20 inches.

So, the area of the sign is $20 \text{ inches} \times 20 \text{ inches} = 400 \text{ square inches}$.

Therefore, the area of the sign is 400 square inches.