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u+2ca1 ⲡ coptic small letter pi These are intended for use as mathematical symbols. Text written in the Greek language (i.e. words, as opposed to mathematics) should not come from any of the tables on this page, but instead should use the normal Greek letters, which have different code numbers and often a different appearance.
East Germany – GDR (German Democratic Republic) Echo – E; Ecstasy – E or X (slang names for the drug) Editor – ED; Egg – O (the letter O loosely resembles the shape of an egg) Elected – IN; Electricity – AC (alternating current), DC (direct current) Eleven – II (II looks similar to 11), or XI (Roman numerals)
Writing systems are used to record human language, and may be classified according to certain common features.. The usual name of the script is given first; the name of the languages in which the script is written follows (in brackets), particularly in the case where the language name differs from the script name.
Pi (letter) – like most Greek letters, pi is used in conjunction with the Latin script; Pe (Cyrillic) – 'Cyrillic' cannot be a language, and so is unambiguous; Pe (Persian letter) – 'Pe (Persian)' could be about a Persian word pe; Ka (kana) – cf. Ka (Cyrillic) Zeta – the Greek letter is the WP:primary topic, as any word zeta derives ...
The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.The number π appears in many formulae across mathematics and physics.
𐌐 : Old Italic and Old Latin P, which derives from Greek Pi, and is the ancestor of modern Latin P. The Roman P had this form (𐌐) on coins and inscriptions until the reign of Claudius, c. 50 AD. 𐍀 : Gothic letter pertra/pairþa, which derives from Greek Pi; П п : Cyrillic letter Pe, which derives from Greek Pi Ⲡ ⲡ : Coptic letter Pi
The word is a play on the word "pi" itself and of the linguistic field of philology. There are many ways to memorize π, including the use of piems (a portmanteau, formed by combining pi and poem), which are poems that represent π in a way such that the length of each word (in letters) represents a digit. [1]
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.