Geometry

Question Analysis  
This question involves calculating cone volume while paying attention to unit consistency (all measurements in inches).  

Key Concept Explanation  
The volume of a cone is given by the formula:

where:
is the radius of the base
is the height of the cone
is approximately 3.1416 or can be left as π in terms of exact value
The volume formula remains standard, but real-world applications often require unit awareness.  

Step-by-Step Solution  
1. Formula:  
2. Substitute

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