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A Bhopal State postage stamp worth 1 anna and three pies. A pie (abbreviated as Ps) was a unit of currency in India, Burma and Pakistan until 1947. It was the smallest currency unit, equal to 1 ⁄ 3 of a pice, 1 ⁄ 12 of an anna or 1 ⁄ 192 of a rupee.
An anna (or ānna) was a currency unit formerly used in British India, equal to 1 ⁄ 16 of a rupee. [1] It was subdivided into four pices or twelve pies (thus there were 192 pies in a rupee).
Paisa (also transliterated as pice, pesa, poysha, poisha and baisa) is a monetary unit in several countries.The word is also a generalised idiom for money and wealth. In India, Nepal, and Pakistan, the paisa currently equals 1 ⁄ 100 of a rupee.
where C is the circumference of a circle, d is the diameter, and r is the radius.More generally, = where L and w are, respectively, the perimeter and the width of any curve of constant width.
Made use of a desk calculator [24] 620: 1947 Ivan Niven: Gave a very elementary proof that π is irrational: January 1947 D. F. Ferguson: Made use of a desk calculator [24] 710: September 1947 D. F. Ferguson: Made use of a desk calculator [24] 808: 1949 Levi B. Smith and John Wrench: Made use of a desk calculator 1,120
In mathematics, Machin-like formulas are a popular technique for computing π (the ratio of the circumference to the diameter of a circle) to a large number of digits.They are generalizations of John Machin's formula from 1706:
Super PI by Kanada Laboratory [101] in the University of Tokyo is the program for Microsoft Windows for runs from 16,000 to 33,550,000 digits. It can compute one million digits in 40 minutes, two million digits in 90 minutes and four million digits in 220 minutes on a Pentium 90 MHz. Super PI version 1.9 is available from Super PI 1.9 page.
The number π (/ p aɪ / ⓘ; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.