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What's wrong with CDs? (Posted on 2005-03-30) Difficulty: 3 of 5

The diameter of a long playing vinyl record is 12 inches. The unused center has a diameter of 4 inches, and there is a smooth outer edge that is 1 inch wide. If there are 91 grooves to the inch, how far does the needle travel within the groove during playback of the record?

See The Solution Submitted by Erik O.    
Rating: 4.0000 (1 votes)

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Puzzle Answer Comment 11 of 11 |
The needle travels approximately 6003.58 inches during the playback of the record.
  Posted by K Sengupta on 2022-07-23 01:01:21
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