I can't speak to the cactus specifically, but any sphere has a surface area of

and a volume of

, so the area-to-volume ratio wold be


Where <em>r</em> is the radius of the sphere.
Answer:150
Step-by-step explanation:
Answer:
1 1/2
Step-by-step explanation:
because when you divide 7.5 by 5 you get 1.5