(Pi) is the ratio obtained when the distance round the circumference C of a circle is divided by the diameter D.
Introducing Pi is best done by a practical method so in any class and it is always went outside to the quadrangle where we drew large circles on the ground using a piece of chalk attached to a length of string. We measured C and D by stepping toe to heel around and across the circle. The units of measurement which was invented had names like Billyfeet, Angelafeet and even dainty, high-heeled teacherfeet.
Then we returned to the classroom and did the calculations. We all got 3 and a bit which was a better result than that obtained by King Solomon in the Bible (Kings 7:23) who thought π was exactly 3.
And he made a molten sea, ten cubits from one brim to the other: it was round all about, and its height was flve cubits: and a line of thirty cubits did compass it round about.
Although for school calculations, we use 3.14 for Pi, the decimal places for Pi go on forever. One obsessed sixteenth century mathematician, Ludolf van Ceulen, spent most of his life on the calculation of π flnally getting to 35 decimal places and this is engraved on his tombstone in the Dutch town of Leiden.
Another obsessive was boarding school headmaster and mathematician, William Shanks (1812-82) who spent twenty years calculatmg Pi to 707 decimal places. He calculated all morning and spent all afternoon checking his morning's work. When the 707 decimal places were studied, the digit 7 appeared fewer times than the other digits. Since little is required to make mathematicians excited, the elusive 7 had them all buzzing and scratching their heads.
However, long after Mr Shanks's death, another mathematician found an error in the poor man's calculation. It was wrong from the 527th place and in the corrected version 7 appeared with the same frequency as every other digit.
Calculating Pi to as many decimal places as possible has never lost its glamour. With the considerable help of a powerful Hitachi computer, Japanese mathematician, Kanada Takahashi, has calculated over 206 billion decimal places for Pi. Yes, that's 206 followed by nine zeros! There is no pattern in the numbers and none of the digits from 0 to 9 appear more or less than any others. It seems that the digits are completely random. But what use is all that stuff? I am tempted to say that Kanada should find another more interesting hobby.
A creative author once sent in a book whose pages were covered in figures. The book's title was Pi.
We highly believed it would be the best bestseller, if not 100% better than Naruto and we hoped we can make Pi fun and save your from being ruin by Naruto !