Answer:
Option "A" is correct.
----------------------------------------
Explanation:
First find the volume of each chocolate ball by the formula provided
*note that there is radius required in the formula that's why we have to convert the diameter in to radius by dividing it by two*
i.e. radius = diameter / 2
=> radius = 0.75/2 = 0.375 inches
THUS the volume of each chocolate ball is equal to
![(4)/(3) \: \pi * {(0.375)}^(3) = 0.22 \: cube \: inches](https://img.qammunity.org/2020/formulas/mathematics/high-school/9uj1v7sndjp9mlbuvs3hkzclou395jc404.png)
Here it is also mentioned that each ball occupy 190% of its original volume thus 190% of 0.22 = 0.22×190 / 100 = 0.418
NOW volume of the pack
= 7.5×3×3 = 67.5
THUS the total number of balls that the pack can occupy
= 67.5 / 0.418 = 161....(approx equal to the given 160)
____________________________________