Exploring Perimeter and Area Ratio of Similar Figures

Explore the Perimeter Ratio and the Area Ratio for scale factors ranging from 0.5 to 5. Drag the SF (Scale Factor) bar to see the changes in perimeter and area for different scale factors. What do you notice? What do you wonder?
What is the relationship between the scale factor and the perimeter ratio? What is the relationship between the scale factor and the area ratio?