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    A tank with an inner walled compartment | 
  2012-10-12 | 
   
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  From don: I have a tank 20 feet diameter, 19' 8" tall with an inner walled compartment that has a 7' 6" radius arc  with in the tank.  I need to figure out the volume of the inner area and the volume of the larger area. Answered by Harley Weston. | 
   
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