My Math Forum how to draw a non-terminating decimal on a number line

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December 23rd, 2018, 12:04 AM   #11
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Quote:
 Originally Posted by rewt pi=22/7 .
No, 22/7 is only a rational number that's close to pi and often used for practical calculations. But 22/7 isn't pi.

December 23rd, 2018, 02:05 AM   #12
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Quote:
 Originally Posted by Maschke No, 22/7 is only a rational number that's close to pi and often used for practical calculations. But 22/7 isn't pi.
according to webster dictionary this is pi
https://www.merriam-webster.com/dictionary/pi
what pi are you talking about.

December 23rd, 2018, 02:14 AM   #13
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Quote:
 Originally Posted by v8archie Like all drawing of points on lines, its an approximation. You make that approximation as accurate as you deem necessary for your purpose. There isn't a graphics package out there that will accurately plot the terminating decimals 2.3460274501837330986734345672095867, or 4.265686866868686868686868 on a number line - or at least the screen/printer won't display is accurately - they will all approximate. Doing it by hand is even less realistic.
the simple question is how non terminating decimals are plotted on a number line and graph.give examples.
if they are plotted using approximation.How they are approximated.examples would be helpful to understand.
Do not provide detail,just summarize how to do it.
Are these kinds of questions widely used in geometry and engineering.
best wishes.

December 23rd, 2018, 02:27 AM   #14
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Quote:
 Originally Posted by Maschke No, 22/7 is only a rational number that's close to pi and often used for practical calculations. But 22/7 isn't pi.
355/113 is much better.

December 23rd, 2018, 05:47 AM   #15
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Quote:
 Originally Posted by rewt according to webster dictionary this is pi https://www.merriam-webster.com/dictionary/pi what pi are you talking about.

Either way, as has already been stated: pi is a transcendental number and thus has no exact decimal representation, including repeated sequences. 22/7 is merely a quick number to approximate with.

-Dan

 Tags decimal, draw, line, nonterminating, number, terminating

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