Some of my avid readers might recall that " 3-circles" survey that Daisy did .... ...but if you weren't one of them , you can find it here .... 643-a-spot-of-avian-arithmetic.html Well, since then several other "students" have got in touch about them .... because they have done a similar thing. Gertrude, for example, had a 4-circle survey area ... and just like Daisy, all her circular plots had a radius of 1 km . ...and like Daisy, she had a bit of time to spare, so she surveyed that middle bit as well. ... but she hadn't worked out the area of it ... so she had to do a spot of arithmetic. .... actually, she had a much easier job than Daisy ..... .... but can you, dear reader, work out the area of that middle bit ? ...... of course you can ! Well, that's sorted that out . But then Alice sent this in .... she too had done a similar survey, but with 5 circles.... .. so ... what's the area of that "inside" bit now ? ... and this one came in a few days later, from Penelope ... she was daft enough to do 6 !! ..and Leonora went one better ( or worse) with 7 !! Obviously, this is all very important ! And what we really need is a general formula that will work "it" out for any number of circles. And I'm sure that you will all have thought of that for yourselves. And done it. Well, that's sorted that little problem .... we can now move on to the far more placid waters of music .... here's a song about a heron ..... crëyr in Welsh, and if you're lucky enough to have more than one crëyr , that will be crychydd. Which makes sense really. Except that in other dictionaries there are various other opinions. But .. on with the music ....
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AuthorThat's the author up there ... I was young and sprightly then. Archives
October 2022
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