Find the perimeter of a rectangle made up of three squares. The side of one square is 6 cm, and the other two are 3 cm.

Determine how many centimeters the length of the other side of the rectangle assembled from squares is equal to, knowing by the condition of the problem that the side of the larger square is 6 centimeters, and the sides of the smaller ones are each 3 centimeters:

6 + 3 = 9.

Let’s determine how many square centimeters the area of a given rectangle is equal to, knowing that it is, by definition, equal to the product of its measurements:

6 * 9 = 54.

Answer: The area of a rectangle assembled from squares is 54 cm2.