From: "Frank Bemelman"
References: <3D7B8D10.5070603@BOGUS.earthlink.net> <3D7CFD55.email@example.com> <6p3f9.201882$8aG1.firstname.lastname@example.org> <3D7D6CF1.email@example.com> <firstname.lastname@example.org> <3D7EB5A2.email@example.com>
Subject: Re: Complex number quiz
Date: Wed, 11 Sep 2002 17:50:58 +0200
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"Christopher R. Carlen" schreef in bericht
> Frank Bemelman wrote:
> > "markp" schreef in bericht
> > news:aljc1c$1qid49$1@ID-100912.news.dfncis.de...
> >>If you want to while away a few more hours, how about this one:
> > [snip]
> > A real nasty one, looks simple:
> > A square. Draw a quarter cirle, radius = size of square, from each
> > corner of the square. This figure looks like a square with a simple
> > flower inside it. The heart of this flower has a cushion shape.
> > Calculate the area this part occupies. Subtract pi/10 (one-tenth-pi).
> > What went wrong ???
> > --
> > Thanks,
> > Frank Bemelman
> > (remove 'x' & .invalid when sending email)
> If r is the length of a side of the square, and consequently the radius
> of the quarter circles inscribed within and centered on each corner,
> then I get for the area of the cushion:
> So if r=1 then A=1-sqrt(3)+pi/3=0.315147
> What's the deal with subtracting pi/10?
I tried to confuse you, hoping you would 'recognize' pi in
the answer, we all know 3.1514 is pi, and the last digit
is rounding errors, oops, pi is 3.1415 of course.
So, your answer is correct. How long did it take you?
(remove 'x' & .invalid when sending email)