Mathematics

I forgot the formula on how to convert regular polygons into circles. What I mean by this is by plugging the length of an apothem or a side into a formula, and you yield 3.14159... The formula has to have the number of sides too. It shows how if the number of sides increase, the polygon becomes a circle. I believe the formula includes sine if you plug in the side and includes cosine and tangent if you plug in the apothem.

Since the forum really does run the risk of going completely sour if someone doesn't post something in it, I thought I'd try to liven it up a bit. I don't know whether anyone who reads these forums has ever written a maths thesis/paper, but I think it'd be quite interesting to find out whether anyone has any particular areas of mathematics that they're fascinated/interested in, or whether you've ever written any papers/theses/short proofs/whatever on anything. Personally, I'm quite interested in the convergence of infinite series and finding their limits (mainly from all of the work we've been doing on it in Analysis this term). Hope we get some more people replyi…

1. Taking an exact number of strides I can walk 9.49 metres. What is the length of my stride? 2. Make a copy of a triangle like that shown with four circles along each edge. Use the numbers 1 to 9. Put one number in each circle so that the four numbers along each edge add up to the same total. Find two different ways of doing this. <IMG height=238 src="http://www.rashidschoolforboys.sch.ae/pages/Maths%20Website2/photots%20for%20maths/trianlge.JPG" width=266> 3.If you multiply together all of the factors of 100, how many zeros will there be on the end of the answer? 4.In this multiplication problem: ?? x ? = ??? all of the digits have been replaced by…

This week, there's three questions that are all a bit easier than last week's really. This time they're included in a PDF file, so enjoy I'll post the answers in exactly a week's time, and probably a couple of hints too. mathsprobs2.pdf