Pi has no letters. The first 11 decimal places are: 3.14159 26535 8
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Oh, dude, the first nine digits of pi are 3.14159265. It's like the opening act of the never-ending show that is pi. Just a bunch of numbers hanging out, doing their thing, never knowing when to stop. Enjoy the ride, my friend.
measure of central angle/360 degrees = area of sector/area of circle 110 degrees/360 degrees = 40 unit2/ pi r2 unit2 11/36 = 40/pi r2 11 pi r2 = 40 x 36 11 pi r2 = 1,440 r2 = 1,440/11 pi r = square root of 1,440/11 pi r = 20.3 unit approximately
When was pi first being used approximated?
Pi is a letter in the Greek alphabet. Greek letters are used for many mathematical quantities, especially variables in formulas, such as theta for an angular measurement, and of course pi for the ratio of the diameter to the circumference of a circle. Pi notation was first used by the English mathematician William Jones in 1706. The pi notation was used by Euler as early as 1737. Thereafter, pi became the standard notation for this all-important ratio and transcendental constant.
The first 55 digits of pi after the decimal point are: 3.1415926535897932384626433832795028841971693993751058209