From: liz@poppyrecords.invalid.invalid   
      
   Edward Rawde  wrote:   
      
   > "Liz Tuddenham"  wrote in message   
   > news:1rmgdu2.kq9ug246pz0gN%liz@poppyrecords.invalid.invalid... > Edward   
   > Rawde  wrote:   
   > >   
   > > [...]   
   > >> What volume of material remains after a six inch long hole, centred on a   
   > >> diameter, is drilled through a sphere?   
   > >   
   > > If the hole diameter can be regarded as small compared with the sphere   
   > > diameter, the curvature at the ends can be neglected .  The calculation   
   > > method will depend on the relative dimensions and the degree of accuracy   
   > > required, so that should sort out the engineers from the theoretical   
   > > mathematicians.   
   > >   
   > > It is also possible to get a negative answer if the hole is bigger than   
   > > the sphere - which should sort out the accountants.   
   >   
   > If the sphere is as big as the earth then you'll find plenty of people who   
   > don't get how you could theoretically drill a six inch long hole through   
   > it and  still be left with the same volume as for any other sphere bigger   
   > than six inches in diameter.   
      
   You just keep the material you drilled out.   
      
      
   --   
   ~ Liz Tuddenham ~   
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   www.poppyrecords.co.uk   
      
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