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7 hours ago · t. e. The number π ( / paɪ /; 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.
- Pi (Letter)
Pi (/ˈpaɪ/; Ancient Greek /piː/ or /peî/, uppercase Π,...
- Pi (Disambiguation)
Π(x) (Pi function), the Gamma function when offset to...
- Mathematical Constant
The circumference of a circle with diameter 1 is π.. A...
- Pi Day
Pi Day is frequently observed on March 14 (3/14 in the...
- Approximations
The Chinese mathematician Liu Hui in 263 CE computed π to...
- Piphilology
Piphilology comprises the creation and use of mnemonic...
- A History of Pi
Part of a series of articles on the: mathematical constant...
- Indiana Pi Bill
Legislative history An 1897 political cartoon mocking the...
- Circumference
In geometry, the circumference (from Latin circumferens,...
- File
Permission is granted to copy, distribute and/or modify this...
- Pi (Letter)
1 day ago · Etymology Main article: Name of Pittsburgh Pittsburgh was named in 1758, by General John Forbes, in honor of British statesman William Pitt, 1st Earl of Chatham. As Forbes was a Scotsman, he probably pronounced the name / ˈ p ɪ t s b ər ə / PITS -bər-ə (similar to Edinburgh). Pittsburgh was incorporated as a borough on April 22, 1794, with the following Act: "Be it enacted by the ...
1 day ago · Development Origins The McDonnell Douglas F-15 Eagle was introduced by the USAF to replace its fleet of McDonnell Douglas F-4 Phantom IIs. Unlike the F-4, the F-15 was designed for air superiority with little consideration for a ground-attack role; the F-15 Special Project Office opposed the idea of F-15s performing interdiction, giving rise to the phrase "Not a pound for air to ground." In ...
7 hours ago · Andrew Johnson (December 29, 1808 – July 31, 1875) was an American politician who served as the 17th president of the United States from 1865 to 1869. He assumed the presidency following the assassination of Abraham Lincoln, as he was vice president at that time. Johnson was a Democrat who ran with Abraham Lincoln on the National Union Party ...
1 day ago · Barcelona. / 41.38278°N 2.17694°E / 41.38278; 2.17694. Barcelona ( / ˌbɑːrsəˈloʊnə / ⓘ BAR-sə-LOH-nə, Catalan: [bəɾsəˈlonə] ⓘ, Spanish: [baɾθeˈlona] ⓘ) is a city on the northeastern coast of Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second-most populous ...
7 hours ago · At 475,442 square kilometres (183,569 sq mi), Cameroon is the world's 53rd-largest country. [84] The country is located in Central Africa, on the Bight of Bonny, part of the Gulf of Guinea and the Atlantic Ocean. [85] Cameroon lies between latitudes 1° and 13°N, and longitudes 8° and 17°E.
7 hours ago · Dissociative identity disorder is characterized by the presence of at least two distinct and relatively enduring personality states. [3] [24] (p331) The disorder is accompanied by memory gaps more severe than could be explained by ordinary forgetfulness. [3] [24] (p331) [25] The personality states alternately show in a person's behavior; [3 ...
