So...anyone here know anything about finding a radius?

Victoria Hyman · 2009-01-06 12:19:48

What we're doing in school right now has literally nothing to do with pi, but I'm totally clueless about it. Anyone care to share their pi explanations?

John E. Franklin · 2009-01-06 13:46:34

Yes, pi is 3.141 and it goes on longer forever. like 3.141592653589793238462643383279...
That's 26 digits or 25 after the decimal.

Now suppose you have a round lake and it's winter for skating,no snow on the ice.
Now Rebecca skates straight across the lake and it takes 1 minute.
Then Tom skates straight across the lake to meet her and it takes 1 minute.
Then Tom and Rebecca skate around the round lake along the edge and it
takes 3 point 141 minutes, that's pie minutes, spelt "pi" without the e.

John E. Franklin · 2009-01-06 13:48:45

So that's about 3 minutes and 8 or 9 seconds to skate around the lake.

8 times 7 is 56 and 9 times 7 is 63. pi is about 3 and 1/7th.

simron · 2009-01-06 14:08:57

Good explaination, John. Here's a link to 10,000 digits of pi, if you were ever to need it. http://www.nerdparadise.com/math/reference/digits/pi/

darkest_salem · 2009-01-08 11:54:03

Thank you both very much. I'm perfect with pi now. Easy as pi! ;]

rishicomplex · 2009-01-09 05:05:33

Simply put, pi is the ratio of the circumference of ANY circle to it's diameter. It finds application most popularly in finding the area of a circle. It is roughly 22/7 or 3.14.

Math Is Fun Forum

#1 2009-01-06 12:19:48

So...anyone here know anything about finding a radius?

#2 2009-01-06 13:46:34

Re: So...anyone here know anything about finding a radius?

#3 2009-01-06 13:48:45

Re: So...anyone here know anything about finding a radius?

#4 2009-01-06 14:08:57

Re: So...anyone here know anything about finding a radius?

#5 2009-01-08 11:54:03

Re: So...anyone here know anything about finding a radius?

#6 2009-01-09 05:05:33

Re: So...anyone here know anything about finding a radius?

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