9. (6 points) The area of a square is equal to the area of a rectangle. If the length of the rectangle is 1024 and the width is 1, then the perimeter of the square is $\qquad$ .
【Analysis】If the length of a rectangle is 1024 and the width is 1, according to the area of a rectangle $=$ length $\times$ width, we can find the area of the rectangle, and then use the area formula of a square to find the side length of the square, and finally, use the perimeter of a square $=$ side length $\times 4$ to find its perimeter.

【Solution】Solution: $1024 \times 1=1024$
$1024=2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2=32 \times 32$, so the side length of the square is 32.
$$
32 \times 4=128
$$

Answer: The perimeter of the square is 128.