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-   -   Re: value of pi and 22/7 (http://www.velocityreviews.com/forums/t745303-re-value-of-pi-and-22-7-a.html)

 Kee Nethery 03-17-2011 05:22 PM

Re: value of pi and 22/7

My favorite approximation is: 355/113 (visualize 113355 split into two 113 355 and then do the division). The first 6 decimal places are the same.

3.141592920353982 = 355/113
vs
3.1415926535897931

Kee Nethery

 peter 03-18-2011 09:10 AM

Re: value of pi and 22/7

On Mar 17, 5:22*pm, Kee Nethery <k...@kagi.com> wrote:
> My favorite approximation is: 355/113 *(visualize 113355 split into two113 355 and then do the division). The first 6 decimal places are the same..
>
> 3.141592920353982 = 355/113
> vs
> 3.1415926535897931
>
> Kee Nethery

Or (more for fun than any practical application) try (2143/22)^(1/4) =
3.14159265268.

Other approximations I have seen are root(10) and 3.142. This last
was especially popular at school, which for me was sufficiently long
ago to have used four figure log tables.

The Old Testament (1 Kings 7,23) says ... "And he made a molten sea,
ten cubits from the one brim to the other: it was round all about, and
his height was five cubits: and a line of thirty cubits did compass it
round about. ". So pi=3. End Of.

 Neil Cerutti 03-18-2011 12:17 PM

Re: value of pi and 22/7

On 2011-03-18, peter <peter.mosley@talk21.com> wrote:
> The Old Testament (1 Kings 7,23) says ... "And he made a molten
> sea, ten cubits from the one brim to the other: it was round
> all about, and his height was five cubits: and a line of thirty
> cubits did compass it round about. ". So pi=3. End Of.

RIIIIIIght. What's a cubit?

--
Neil Cerutti

 Stefan Behnel 03-18-2011 12:45 PM

Re: value of pi and 22/7

Neil Cerutti, 18.03.2011 13:17:
> On 2011-03-18, peter<peter.mosley@talk21.com> wrote:
>> The Old Testament (1 Kings 7,23) says ... "And he made a molten
>> sea, ten cubits from the one brim to the other: it was round
>> all about, and his height was five cubits: and a line of thirty
>> cubits did compass it round about. ". So pi=3. End Of.

>
> RIIIIIIght. What's a cubit?

http://en.wikipedia.org/wiki/Cubit

I think that particular author of that particular part of the bible just
used it to make the text appear older than it was at the time.

Stefan

 D'Arcy J.M. Cain 03-18-2011 01:01 PM

Re: value of pi and 22/7

On Fri, 18 Mar 2011 13:45:47 +0100
Stefan Behnel <stefan_ml@behnel.de> wrote:
> Neil Cerutti, 18.03.2011 13:17:
> > RIIIIIIght. What's a cubit?

>
> http://en.wikipedia.org/wiki/Cubit

I don't believe that Neil was asking a serious question.

--
D'Arcy J.M. Cain <darcy@druid.net> | Democracy is three wolves
http://www.druid.net/darcy/ | and a sheep voting on
+1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner.

 Neil Cerutti 03-18-2011 01:01 PM

Re: value of pi and 22/7

On 2011-03-18, Stefan Behnel <stefan_ml@behnel.de> wrote:
> Neil Cerutti, 18.03.2011 13:17:
>> On 2011-03-18, peter<peter.mosley@talk21.com> wrote:
>>> The Old Testament (1 Kings 7,23) says ... "And he made a molten
>>> sea, ten cubits from the one brim to the other: it was round
>>> all about, and his height was five cubits: and a line of thirty
>>> cubits did compass it round about. ". So pi=3. End Of.

>>
>> RIIIIIIght. What's a cubit?

>
> http://en.wikipedia.org/wiki/Cubit
>
> I think that particular author of that particular part of the
> bible just used it to make the text appear older than it was at
> the time.

--
Neil Cerutti

 Aage Andersen 03-18-2011 01:05 PM

Re: value of pi and 22/7

"peter"
Kee Nethery > My favorite approximation is: 355/113 (visualize 113355 split
into two 113 355 and then do the division). The first 6 decimal places are
the same.
>
> 3.141592920353982 = 355/113
> vs
> 3.1415926535897931
>
> Kee Nethery

Or (more for fun than any practical application) try (2143/22)^(1/4) =
3.14159265268.

Other approximations I have seen are root(10) and 3.142. This last
was especially popular at school, which for me was sufficiently long
ago to have used four figure log tables.

The Old Testament (1 Kings 7,23) says ... "And he made a molten sea,
ten cubits from the one brim to the other: it was round all about, and
his height was five cubits: and a line of thirty cubits did compass it
round about. ". So pi=3. End Of.
-------------------------------------------------------------------

3 is the best integer approximation to pi. So the bibel is right.

Aage

 Stefan Behnel 03-18-2011 02:00 PM

Re: value of pi and 22/7

Sherm Pendley, 18.03.2011 14:46:
> Stefan Behnel writes:
>
>> Neil Cerutti, 18.03.2011 13:17:
>>> On 2011-03-18, peter<peter.mosley@talk21.com> wrote:
>>>> The Old Testament (1 Kings 7,23) says ... "And he made a molten
>>>> sea, ten cubits from the one brim to the other: it was round
>>>> all about, and his height was five cubits: and a line of thirty
>>>> cubits did compass it round about. ". So pi=3. End Of.
>>>
>>> RIIIIIIght. What's a cubit?

>>
>> http://en.wikipedia.org/wiki/Cubit
>>
>> I think that particular author of that particular part of the bible
>> just used it to make the text appear older than it was at the time.

>
> Sigh. Doesn't *anyone* know Cosby any more? Kids today, no appreciation
> for the classics. :-(

And what about Heinz Erhardt? *That's* a classic.

Stefan

 Grant Edwards 03-18-2011 02:16 PM

Re: value of pi and 22/7

On 2011-03-18, peter <peter.mosley@talk21.com> wrote:

> The Old Testament (1 Kings 7,23) says ... "And he made a molten sea,
> ten cubits from the one brim to the other: it was round all about, and
> his height was five cubits: and a line of thirty cubits did compass it
> round about. ". So pi=3. End Of.

There's nothing wrong with that value. The measurements were given
with one significant digit, so the ratio of the two measurements
should only have one significant digit.

--
Grant Edwards grant.b.edwards Yow! It's some people
at inside the wall! This is
gmail.com better than mopping!

 Kee Nethery 03-18-2011 02:22 PM

Re: value of pi and 22/7

On Mar 18, 2011, at 5:17 AM, Neil Cerutti wrote:

> On 2011-03-18, peter <peter.mosley@talk21.com> wrote:
>> The Old Testament (1 Kings 7,23) says ... "And he made a molten
>> sea, ten cubits from the one brim to the other: it was round
>> all about, and his height was five cubits: and a line of thirty
>> cubits did compass it round about. ". So pi=3. End Of.

>
> RIIIIIIght. What's a cubit?

I use cubits all the time. The distance from my elbow to my finger tips equals one cubit. When you don't have a proper measuring tape, it can be pretty accurate for comparing two measurements.

Kee Nethery

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