Q: What is the earliest know reference to Pi in history?

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he had something to do with pi

2+2=5.pi

Archimedes (287-212 BC) was supreme and greatest Greek mathematician. He solved the problem of buoyancy. He established the laws of the lever. He Devised a method of displacement volumes (the Eureka formula).he Made creative war machines to fight off the Romans. He Invented calculus (although this was forgotten)

It is the same as in Unicode - 32 letters: alpha, beta, gamma, delta, epsilon, digamma, stigma, zeta, heta, eta, theta, iota, yot, kappa, lamda, mu, nu, xi, omicron, pi, san, koppa, rho, sigma, tau, upsilon, phi, chi, psi, omega, sampi, sho Source: list of all symbols tagged *GREEK*LETTER* in allkeys.txt on Unicode website

Small list of great inventions/achievements of ancient China, and various other Chinese "firsts": - Paper - Printing - Compass - Gunpowder - Bell - Ax - Drum - Beer - Fork - Pasta - Oars/rowing - Table salt - Silk - Rice/soybean cultivation - Acupuncture - Anti-malarial compounds - Paper currency - Various metallurgic technologies - Blast furnace - Mechanical belt drive - Drilling - Cast iron - Accurate calendar year - Chemical warfare - Use of chromium - Crossbow - Cold-fusion steel process - Treatment of diabetes - Identification and treatment of malnutrition diseases - Endocrinology - Various achievements in astronomy - Various achievements in geometry and mathematics - Exploding cannonballs - Fireworks - Carriage - Fishing reel - Horse collar/harness - Jade - Kite - Landmine - Various nautical inventions - Match - Natural gas as fuel - Negative numbers - Playing cards - Go/Mahjong/Chinese checkers - Porcelain - Pound lock - Puppet theater - Restaurant menu - Rotary fan - Seismometer - Suspension bridge - Tea - Use of thyroid hormones to treat goiters - Tofu - Toilet paper - Toothbrush - Catapult - Wheelbarrow - Discovery of circadian rhythm - Decimal fractions - Concept of climate change - Music theory - Gaussian elimination - Description of leprosy - Estimate of pi - Recognition of spontaneous combustion - Concept of true north - Recognition of sunspots, and various other astronomical phenomena - Accurate description of solar eclipse

Related questions

The first reference was in 1352

Archimedes (287-212 BC)

The earliest known textually evidenced approximations of PI date from around 1900 BC. They are found in the Egyptian Rhind Papyrus.

Archimedes

198A.D.

3.14159265">the number pi is equal to is 3.14159265

suck it

-23

762 is when the decimal of pi had the earliest occurrence of the string 999999. Pi has been represented by a Greek letter since the mid 19th century.

The earliest signs of the use of Pi was in the designs of the Old Kingdom pyramids in Egypt. Many divide the history of Pi into three periods: The ancient period during which Pi was studied in a geometrical manner, the classical era when Pi was fully developed after the creation of calculus in the 17th century and, most recently, the age of digital computers.

pi is a mathematical formula, or 3.14159265389793238462683. it relates to the diameter and circumference of a circle. i don't know the history but im sure its somwhere!answ2. There is currently a proposal to name 2 Pi as Tau, as this aids in many calculations. Watch this space. The ratio of the perimeter to the height of Khufu's Pyramid is 2 Pi.

a number