Geometry

Question Analysis  
This question reinforces the process of using surface area to find volume, with larger numbers to test arithmetic accuracy.  

Key Concept Explanation  
Surface area formula: .  
Volume formula: .  

Step-by-Step Solution  
1. Find the radius:  
   
  Simplify:  
    (r is non-negative)
2. Calculate the volume:  
     

Common Mistakes  
Miscalculating

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