How many digits to use in calculations.

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Calculating with 20+ digits offers no significant advantage over using 6 digits in most cases. The discussion touches on the potential historical use of slide rules for older problems. A question is raised about the publication date of a referenced book, hinting at its relevance to the calculations. Additionally, there is curiosity about Io's orbital period and how one day compares to its full orbit. The conversation reflects on the practicality of precision in calculations.
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Nevermind, but thanks Chi Meson. I was not calculating correctly... Sorry :)
 
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First question: what is the date that this book was printed? If it is really old, the problems may have been solved using a slide rule. I doubt this is the case.

Anyway, carrying 20+digits through your calculations will make no difference from using 6.

How long is Io's orbit anyway? what percentage is 1 day to the full orbit?
 
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