Knowing the width and length of the rectangle, you can find its perimeter: P = (a + b) * 2, where P is the perimeter, a is the length, and b is the width. The side of the square is 9 cm, and the rectangle is divided into squares, which means that the width of the rectangle is also 9 cm.A square has all sides equal, and the rectangle is divided into squares, and the side of the square is 9 cm, then the length of the rectangle is 9 * 2 = 18 cm. Because both the width and length of the rectangle are known, we will find its perimeter:
P = (9 + 18) * 2 = 27 * 2 = 54 cm.
Answer: 54 cm.
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