The ratio A/r² would represent

which is the circumference of a circle divided by its diameter.
You can see this because the area of a circle is

r² and if you divided that by the radius squared, you are given pi which is the circumference of a circle divided by its diameter.
The answer is in the picture
Sorry I can’t copy and pasted it here
Number 2 will have the highest percent in sales
Answer:
Step-by-step explanation:
surface area=4πr²=36π
r²=9
r=3
Answer: 20
Step-by-step explanation: Just took the quiz