If the question is how many shelves are needed, then the answer is 18 shelves.
Answer:

Step-by-step explanation:
Volume of a Rectangular Prism is :

For,


The Height of the rectangular prism is: 
Answer:
5^20
Step-by-step explanation:
For each comic book, there are five different choices for which kid will receive that comic book. 20 decisions are made, one for each comic book with five different possibilities for each choice. The number of ways to distribute the comic books to the five kids is 5^20.