Find the volume obtained by rotating the region bounded by the given curves about 
. 
Definitions:
Public Network
A telecommunications network that is accessible by the general public, providing data communication services.
Network Hubs
Hardware devices used to connect multiple computers or other network devices together, operating at the physical layer of the OSI model.
Switches
Hardware or software components that can open or close circuits to control the flow of electricity or information in a computing environment.
Security Key
A physical or digital tool used to gain access to secured data or locations, often in the form of a password, code, or hardware token.
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