Final answer:
The model represents D. A = πr^2, which is the formula for finding the area of a circle using the radius squared and pi.
Step-by-step explanation:
The object being represented by the model on the right is D. A = πr^2, which is the formula for calculating the area of a circle. This equation uses the value of pi (π) and the radius (r) of the circle squared to determine the total area within the perimeter of the circle. When given a radius, for example, 1.2 meters, you can use this formula to calculate the area. As per the provided information, if we square the radius (1.2 m) and multiply by pi, we get an area of 4.5238934 m², which should be rounded to 4.5 m², according to the rules of significant figures, since the radius was provided with only two significant figures.