I am really stuck on this

1)I have two jawbreakers.Jaw Breakers are spherical pieces of candy that take a long time to dissolve.They are awesome.It turns out that you can get jawbreakers in a variety of sizes.Suppose Store A sells Jaw Breakers that have a diameter of 1.3 inches.Suppose Store B sells Jaw Breakers that have a diameter of 2 inches.

a)Find the radius of the Store A Jaw Breakers.Show all work.

Radius =

b)Find the radius of the Store B Jaw Breakers.Show all work.

Radius =

c)To find the "amount of candy" we consume when eating a Jaw Breaker, would we use the Surface Area formula for a sphere, or would we use the Volume formula for a sphere?

d)Use the formula to find the amount of candy you get in one of Store A's Jaw Breakers.Show all work.