Final answer:
The best tile shape for Dante to use to show the area of a rectangle in cm² is square tiles because they can cover the area completely without gaps and relate directly to how area is calculated.
Step-by-step explanation:
The best tile shape for Dante to use to show the area of a rectangle would be A) Square tiles. Squares can completely fill a rectangular area without leaving any gaps, which is not the case with circular or hexagonal tiles. Also, while triangle tiles could potentially cover the area, square tiles provide a direct correlation to the formula for finding the area of a rectangle, which is length multiplied by width (l × w). The area of a square tile is simply the length of one of its sides squared (a²), which relates directly to the concept of area in square units. Since Dante is working with area in square centimeters, using square tiles allows him to accurately and efficiently calculate and represent the area by counting the total number of square tiles used.