What is Wu equal to in mathematics?

Pi in Greek letters? π (pronounced pài) is a constant representing the ratio of circumference to diameter. It is an irrational number, that is, an infinite cycle decimal.

In daily life, pi is usually expressed as 3. 14, which is used for approximate calculation. The fractional part 3. 14 1592654 is enough for general calculation. Even if engineers or physicists want to make more accurate calculations, they only need to take the values to a few hundred decimal places at best.

Extended data 1. Experimental period of π

An ancient Babylonian stone tablet (about BC 1900 to BC 1600) clearly recorded that pi = 25/8 = 3. 125. Rhind papyrus, an ancient Egyptian cultural relic of the same period, also shows that pi is equal to the square of score 16/9, which is about 3. 1605. ?

Egyptians seem to have known pi earlier. British writer john tyler (1781–1864) wrote in his masterpiece The Great Pyramid: Why was it built and who built it? ) It is pointed out that the pyramid of khufu built around 2500 BC is related to pi.

For example, the ratio of the circumference to the height of a pyramid is equal to twice the pi, which is exactly equal to the ratio of the circumference to the radius of a circle. The Brahman of Sa tabata, an ancient Indian religious masterpiece written from 800 to 600 BC, shows that pi is equal to 339/ 108, which is about 3. 139.

Second, the approximate value of π

3. 14 1592653589793238462643383279502884 197 169399375 1058209749445923078 16406286208998628034825342 / kloc-0/ 1706798 2 1480865 1328230664709384460955058223 1725359408 12848 1 1 17450284 1 0270 193852 1 105559644622 94895493038 19644288 10975665933446 128475648233786783 16527 120 1909 1

456485669234603486 104543266482 13393607260249 14 12737245870066063 15588 17488 152092096282925409 / kloc-0/7 1536 43678925903600 1 133053054882046652 1384 14695 194 15 1 160943305727036575959 1953092 186 1

1738 19326 1 1793 105 1 1854807446237996274956735 188575272489 1227938 1830 / kloc-0/ 1949 12 983367336244065664308602 1394946395224737 190702 1798609437027705392 17 176293 / kloc-0/767523846748 18467669405 132000 568 127 14526356082778577 1342757789609 173637 1

7872 146844090 1224953430 14654958537 10507922796892589235420 19956 1 12 12902 1 9608640344 18 15 98 1362977477 13099605 187072 1 134999999837297804995 105973 17328 / kloc-0/60963 1859502445945534690830264252230825334468503

526 193 1 188 17 10 10003 13783875288658753320838 14206 17 177669 1 47303598253490428755468736543 8+0 15956286388235378759375 195778 1857780532 17 12268066 1300 1 9278766 1 1 1959092 16420 19893809525720 1065485863278865936

15338 182796823030 195203530 18529689957736225994 1389 124972 1775283479 13 15 1 5574857242454 1 50695950829533 1 1686 172785588907509838 17546374649393 1925506040092770 167 1 1390098488240 1285836 1603563707660 10

47 10 18 1942955596 198946767837449448255379774726847 10404753464620804668425906949 12933 1 3677028989 15265438+ 004752 162056966024058038 150 1935 1 12533824300355876402474964732639 14 / kloc-0/9927260426992279678235478 16360093465 438+072 164 12 199245863 15030286 18297455570674983850549458858692699569092

72 1079750930295532 1 165344987202755960236480665499 1 1988 183479775356636980742654252786255 18 / kloc-0/84 17574 67289097777279380008 16470600 16 145249 192 1732 172 14772350 14 / kloc-0/44 1973568548 16 136 1 157352552 13347574 18

49468438523323907394 1433345477624 168625 189835694855620992 19222 18427255025425688767 179049460 1 65346680498862723 279 178608578438382796797668 1454 100953883786360950680064225 125205 1 17392984896084 1

2848862694560424 19652850222 1066 1 186306744278622039 194945047 1237 1378696095636437 19 / kloc-0/728746776465757 39624 138908658326459958 1339047802759009946576407895 12694683983525957098258226205224894077267

1947826848260 1476990902640 13639443745530506820349625245 174939965 143 1429809 19065925093722 / kloc-0/69646 156 5438+057098583874 10597885959772975498930 16 1753928468 138268683868942774 15599 185592524595395943 10499

72524680845987273644695848653836736222626099 12460805 124388439045 1244 1365497627807977 1569 1435997700 / kloc-0/296 1 608944 1694868555848406353422072225828488648 1584560285060 16842739452267467678895252 13852

2549954666727823986456596 1 16354886230577456498035593634568 174324 1 125 1507606947945 1 0965960940252288797 10 893 145669 136867228748940560 10 15033086 179286809208747609 178249385890097 1490967598526 13655

4978 1893 12978482 16829989487226588048575640 14270477555 13237964 145 1 52374623436454285844479526586782 105654 38+0 14 1354735739523 1 13427 166 102 13596953623 / kloc-0/442952484937 187 1 10 1457654035902799344037420073 10578

539062 19838744780847848968332 14457 1386875 19435064302 18453 19 104848 10053706 1 46806749 192786543 8+09 1 19793995206 14 19663428754440643745 1237 18 192 17999839 / kloc-0/0 159 1956 18 1467565 438+04269 1239748940907 18649423 196 15679

45208095 14655022523 160388 1930 142093762 137855956638937787083039069792077346722 18256259966 150 / kloc-0/42 150 30680384477345492026054 1466592520 14974428507325 18666002 132434088 1907 1048633 173464965 145390579

626856 1005508 106658796998 16357473638405257 1459 102897064 140 1 1097 1 2062804390397595 1567765438+ 057700420337869936007230558763 17635942 1873 125 147 120532928 19 / kloc-0/826 186 12586732 1579 1984 14848829 164470609575270

69572209 17567 1 167229 1098 16909 15280 1735067 1274858322287 1835209353965725 / kloc-0/2 108357965438+ 05 136988209 14442 100675 1033467 1 103 14 1267 1 / kloc-0/ 13699086585 163983 150 197065 438+065 15 1 1685 17 14376576 1835 15565088490998985998238

734552833 16355076479 18535893226 185489632 1329330898570642046752590709 1548 14 1654985946 1 637 180270986 5438+099430992448895757 12828905923233260972997 1208443357326548938239 1 193259746366730583604 1428 138830

3203824903758985243744 17029 1327656 180937734440307074692 1 120 19 13020330380 19762 1 10 16543 8+0004492932 15 16084244485963766983895228684783 1235526582 13 144957685726243344 18930396864262434 10773226978028073 18

9 1544 1 10 104468232527 1620 1052652272 1 1 1660396665573092547 1 1 0557853763466820653 109 8965269 186205647693 12570586356620 18558 100729360659876486 1 179 1 0453348850346 1 1365768675324944 16680396265797877 1855

60845529654 126654085306 1434443 1858676975 14566 1406800700237877659 13440 17 1 274947042056223053899456 1 3 1407 1 12700040785473326993908 14546646458807972708266830634328587856983052358089330657574067954

57 163775254202 1 1495576 158 1400250 126228594 1302 1647 1550979259230990796547376 / kloc-0/255 1765675 13575 17829666454779 17450 1 12996 14890304639947 132962 1 073404375 189573596 145890 193897 13 1 1 179042978285647503203

19869 15 14028708085990480 1094 12 14722 13 179476477726224 14254854540332 157 / kloc-0/85306 1422 88 13758504306332 175 1829798662237 172 159 16077 1 669254748738986654949450 1 14654062843366393790039769265672 1463853067

3609657 1209 1807638327 1664 1627488880078692560290228472 10403 172 1 18608204 1 9000422966 17 16 5438+09637792 1337575 1 1495950 156604963 186294726547364252308 17703675 / kloc-0/59067350235072835405670403867435 1362222477 15

89 1504953098444893330963408780769325993978054 1934 144737744 184263 12986080998886874 13260472 1 5695 162396586 457302 163 1598 193 195 1673538 12974 1677294786724229246543668009806769282382806899640048243

540370 14 163 14965897940924323789690706977942236250822 168895738379862300 159377647 165 1 2289357860 158865438+ 06 175578297352334460428 15 126272037343 14653 1977774 1603 199066554 / kloc-0/8763979293344 1952 154 134 189948

5444734567383 16249934 19 13 18 1480927777 103863877343 17720754565453220777092 120 1 905 166096280490 926360 197598828 16 13323 1666365286 19326686336062735676303544776280350450777235547 1058595487027908 1435

6240 145 17 18062464362679456 12753 18 1340783303362542327839449753824372058353 1 1477 / kloc-0/ 199260638654 38+033467768796959703098339 13077 10987040859 1337464 144282277263465947047458784778720 19277 1528073 1767907707

1572 1344473060570073349243693 1 138350493 163 12840425 12 192565 17980694 1 / kloc-0/35280 136543 8+0470 130478 16437885 18529092854520 1 16583934 196562 1349 1434 / kloc-0/5956258658655705526904965209858033850722426482939728584783 1

6305777756068887644624824685792603953527734803048029005876075825 10474709 164396 136267604492562742042083208566 1 1 90625454337 2 13 153595845068772460290 16 187667952406 16342522577 195429 16299 1930645537

799 14037340432875262888963995879475729 174642635745525407909 145 1357 1 1 13694 109 1 1939325 1 9 10760208252026 1879853 188770584297259 16778 13 1496990090 192 1 / kloc-0/697 1737278476847268608490033770242429 165 1300500

5 1683233643503895 170298939223345 17220 138 128069650 1 1784408745 1960 12 1 22859937 162365438+ 030 17 1 14448464090389064495444006 19869075485 16026327505298349 1874078668088 / kloc-0/83385 10228334508504860825039302 1332 197 1

55 18430635455007668282949304 13776552793975 17546 13953984683393638304746 1 1996653858 1 538420568533862 186725 23340283087 1 1232827892 125077 1262946322956398989893582 1 167456270 1 02 1835646220 134967 15 188 19

0973038 1 1980049734072396 103685406643 1939509790 19069963955245300545058068550 19567302292 19 / kloc-0/39339 185 68034490398205955 100226353536 19204 19947455385938 102343955449597783779023742 16 1727 1 1 1723643435439

47822 18 18528624085 140066604433258885698670543 154706965747458550332323342 10730 15459405 1 65537906866273337995856 5438+0 15625784322988273723 19898757 14 159578 1 1 19635833005940873068 12 160287649628674460477464

9 15995054973742562690 104903778 1986835938 146574 126804925648798556 1 4537234786733039046883834363465537949864 1927 056387293 174872332083760 1 1230299 1 1 3679386270894387993620 16295 154 1337 14248928307220 12

690 1475466847653576 164773794675200490757 1555278 1965362 1323926406 160 136358 1 55907422020203 187277605 2772 1900556 14842555 187925303435 1398442532234 15762336 1 0642506390497500865627 1095359 194658975 14 13 1

Baidu Encyclopedia-Pi (the ratio of the circumference to the diameter of a circle)

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