Hi John Remove the last sentence of my previous e-mail: "Only for values of minor axe and major axe with a ratio < 53/47 (an analemmatic sundial near the pole) your formula is more accurate then the formula of Ramanujan."
He is wrong. Regards. Willy I wrote: > Hi John, > > When you write area, you mean circumference, I suppose. > > Your fomula is not so accurate as the formula of Ramanujan: > > ( 3(a + b) - sqrt[ (a + 3b)(3a + b) ] ) pi > > De greatest deviation according to this formula is 0.4 % (when the minor axe > is zero). > According to your formula the deviation varies from 21,5 % (when the minor > axe is zero) to 0 % (when the minor axe = the major axe). > Only for values of minor axe and major axe with a ratio < 53/47 (an > analemmatic sundial near the pole) your formula is more accurate then the > formula of Ramanujan. > > Regards. > > ============================= > Willy Leenders > Kloosterlaan 60 > B 3500 Hasselt > Belgium > 50.893722 N 5.34986 E > Tel. (00)(#)(0)11 72 04 47 > [EMAIL PROTECTED] > ============================= >
