Reena buys a hemispherical blob of ice cream with a diameter of \(12 \ cm\) to share with her staffs. She plans to divide the ice cream evenly among her staffs. The hemispherical scoop she has, holds \(22 \ ml\) of ice cream. To figure out how many such scoops she can serve, Reena does some calculations. [Note: Use \(\pi = \frac{22}{7}\)]
1. What is the radius of the ice cream blob?
2. What is the total volume of the ice cream she bought in \(ml\)?
(Round off the value to whole number)
3. How many hemispherical scoops of ice creams she can get from it?
(Round off the value to whole number)
4. If she serves each staffs with \(6\) scoops of ice cream, then how many staffs were there?