"a" wrote in message
...
On Aug 27, 7:18 pm, "Bob F." wrote:
Here's a cute trivial problem I usually use to kill time with curious
students.
There are places on the Earth where you can fly; 1 mile south, then 1 mile
east (or west), and then 1 mile north, and end up in the same place. One
of these places is the north pole. Where are the others?

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Regards, BobF.

the correct distance from the south pole that is one mile north of the
place where 1 mile is one, two, three, or more circles of the pole, of
course. There are an infinity of them, but I think the most distant
one from the pole is the order of 1 plus1/6.28 miles from the south
pole.


Right on...you guys are too good!

--
Regards, BobF.