π是多少?怎么算啊？ 兀是多少?怎么算?
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7872146844090122495343014654958537105079227968925892354201995611212902196086403441815981362977477130996051870721134999999837297804995105973173281609631859502445945534690830264252230825334468503
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15338182796823030195203530185296899577362259941389124972177528347913151557485724245415069595082953311686172785588907509838175463746493931925506040092770167113900984882401285836160356370766010
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72107975093029553211653449872027559602364806654991198818347977535663698074265425278625518184175746728909777727938000816470600161452491921732172147723501414419735685481613611573525521334757418
494684385233239073941433345477624168625189835694855620992192221842725502542568876717904946016534668049886272327917860857843838279679766814541009538837863609506800642251252051173929848960841
284886269456042419652850222106611863067442786220391949450471237137869609563643719172874677646575739624138908658326459958133904780275900994657640789512694683983525957098258226205224894077267
194782684826014769909026401363944374553050682034962524517493996514314298091906592509372216964615157098583874105978859597729754989301617539284681382686838689427741559918559252459539594310499
7252468084598727364469584865383673622262609912460805124388439045124413654976278079771569143599770012961608944169486855584840635342207222582848864815845602850601684273945226746767889525213852
25499546667278239864565961163548862305774564980355936345681743241125150760694794510965960940252288797108931456691368672287489405601015033086179286809208747609178249385890097149096759852613655
49781893129784821682998948722658804857564014270477555132379641451523746234364542858444795265867821051141354735739523113427166102135969536231442952484937187110145765403590279934403742007310578
5390621983874478084784896833214457138687519435064302184531910484810053706146806749192781911979399520614196634287544406437451237181921799983910159195618146751426912397489409071864942319615679
4520809514655022523160388193014209376213785595663893778708303906979207734672218256259966150142150306803844773454920260541466592520149744285073251866600213243408819071048633173464965145390579
6268561005508106658796998163574736384052571459102897064140110971206280439039759515677157700420337869936007230558763176359421873125147120532928191826186125867321579198414848829164470609575270
69572209175671167229109816909152801735067127485832228718352093539657251210835791513698820914442100675103346711031412671113699086585163983150197016515116851714376576183515565088490998985998238
73455283316355076479185358932261854896321329330898570642046752590709154814165498594616371802709819943099244889575712828905923233260972997120844335732654893823911932597463667305836041428138830
32038249037589852437441702913276561809377344403070746921120191302033038019762110110044929321516084244485963766983895228684783123552658213144957685726243344189303968642624341077322697802807318
91544110104468232527162010526522721116603966655730925471105578537634668206531098965269186205647693125705863566201855810072936065987648611791045334885034611365768675324944166803962657978771855
60845529654126654085306143444318586769751456614068007002378776591344017127494704205622305389945613140711270004078547332699390814546646458807972708266830634328587856983052358089330657574067954
57163775254202114955761581400250126228594130216471550979259230990796547376125517656751357517829666454779174501129961489030463994713296210734043751895735961458901938971311179042978285647503203
1986915140287080859904801094121472213179476477726224142548545403321571853061422881375850430633217518297986622371721591607716692547487389866549494501146540628433663937900397692656721463853067
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1572134447306057007334924369311383504931631284042512192565179806941135280131470130478164378851852909285452011658393419656213491434159562586586557055269049652098580338507224264829397285847831
63057777560688876446248246857926039535277348030480290058760758251047470916439613626760449256274204208320856611906254543372131535958450687724602901618766795240616342522577195429162991930645537
79914037340432875262888963995879475729174642635745525407909145135711136941091193932519107602082520261879853188770584297259167781314969900901921169717372784768472686084900337702424291651300500
516832336435038951702989392233451722013812806965011784408745196012122859937162313017114448464090389064495444006198690754851602632750529834918740786680881833851022833450850486082503930213321971
551843063545500766828294930413776552793975175461395398468339363830474611996653858153842056853386218672523340283087112328278921250771262946322956398989893582116745627010218356462201349671518819
0973038119800497340723961036854066431939509790190699639552453005450580685501956730229219139339185680344903982059551002263535361920419947455385938102343955449597783779023742161727111723643435439
4782218185286240851400666044332588856986705431547069657474585503323233421073015459405165537906866273337995851156257843229882737231989875714159578111963583300594087306812160287649628674460477464
9159950549737425626901049037781986835938146574126804925648798556145372347867330390468838343634655379498641927056387293174872332083760112302991136793862708943879936201629515413371424892830722012
6901475466847653576164773794675200490757155527819653621323926406160136358155907422020203187277605277219005561484255518792530343513984425322341576233610642506390497500865627109535919465897514131
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u5706\u5468\u7387 \uff08\u5706\u7684\u5468\u957f\u4e0e\u76f4\u5f84\u7684\u6bd4\u503c\uff09
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u220f
参考如下：
1、1π=3.14、2π=6.28、3π=9.42、5Pπ=12.56、6π=15.7、7π=18.84、8π=21.98、9π=25.12、10π=31.4。
2、π约等于3.141592654。
3、圆周率用希腊字母 π（读作pài）表示，是一个常数（约等于3.141592654），是代表圆周长和直径的比值。
4、它是一个无理数，即无限不循环小数。在日常生活中，通常都用3.14代表圆周率去进行近似计算。而用十位小数3.141592654便足以应付一般计算。
5、即使是工程师或物理学家要进行较精密的计算，充其量也只需取值至小数点后几百个位。
把圆周率的数值算得这么精确，实际意义并不大。现代科技领域使用的圆周率值，有十几位已经足够了。如果以39位精度的圆周率值，来计算可观测宇宙（observable universe）的大小，误差还不到一个原子的体积。以前的人计算圆周率，是要探究圆周率是否循环小数。自从1761年兰伯特证明了圆周率是无理数，1882年林德曼证明了圆周率是超越数后，圆周率的神秘面纱就被揭开了。
π在许多数学领域都有非常重要的作用。
π是一个超越数，是一个无限不循环小数。我们一般用二位小数3.14（约率22/7）就基本够用了。需要精确计算的场合，用到7位小数3.1415926（密率355/113）可以适用于几乎所有的场合了。这个约率和密率都是祖冲之发现的。
π是圆周率（Pi），圆的周长与直径的比值。一般用希腊字母π表示，是一个在数学及物理学中普遍存在的数学常数。圆周率是用圆的周长除以它的直径计算出来的
绛旓細蟺鏄竴涓暟瀛﹀父鏁帮紝浠ｈ〃鍦嗙殑鍛ㄩ暱涓庣洿寰勭殑姣斾緥锛岀害绛変簬3.14159265358979锛堝皬鏁扮偣鍚庨潰鏈夋棤闄愪釜鏁板瓧锛銆傁鐨勮绠楁柟娉曟湁澶氱锛屽叾涓渶甯歌鐨勬槸閫氳繃鍦嗙殑鍛ㄩ暱鎴栭潰绉潵璁＄畻銆備笅闈㈡槸涓浜涜绠椣鐨勬柟娉曪細1. 鍛ㄩ暱娉曪細灏嗗渾鐨勫懆闀块櫎浠ョ洿寰勶紝鍗冲彲寰楀埌蟺鐨勮繎浼煎銆備緥濡傦紝瀵逛簬鐩村緞涓1鐨勫渾锛屽叾鍛ㄩ暱绾︿负3.14159265358979锛屽洜...
绛旓細2銆佅绾︾瓑浜3.141592654銆3銆佸渾鍛ㄧ巼鐢ㄥ笇鑵婂瓧姣 蟺锛堣浣減脿i锛夎〃绀猴紝鏄竴涓父鏁帮紙绾︾瓑浜3.141592654锛夛紝鏄唬琛ㄥ渾鍛ㄩ暱鍜岀洿寰勭殑姣斿笺4銆佸畠鏄竴涓棤鐞嗘暟锛屽嵆鏃犻檺涓嶅惊鐜皬鏁般傚湪鏃ュ父鐢熸椿涓紝閫氬父閮界敤3.14浠ｈ〃鍦嗗懆鐜囧幓杩涜杩戜技璁＄畻銆傝岀敤鍗佷綅灏忔暟3.141592654渚胯冻浠ュ簲浠樹竴鑸绠椼5銆佸嵆浣挎槸宸ョ▼甯堟垨鐗╃悊瀛...
绛旓細3銆佅涔熺瓑浜庡渾褰箣闈㈢Н涓庡崐寰勫钩鏂逛箣姣銆傛槸绮剧‘璁＄畻鍦嗗懆闀裤佸渾闈㈢Н銆佺悆浣撶Н绛夊嚑浣曞舰鐘剁殑鍏抽敭鍊笺4銆佸湪鍒嗘瀽瀛﹂噷锛屜鍙互涓ユ牸鍦板畾涔変负婊¤冻sin x = 0鐨勬渶灏忔瀹炴暟x銆5銆佸渾鍛ㄧ巼鐢ㄥ笇鑵婂瓧姣 蟺锛堣浣減脿i锛夎〃绀猴紝鏄竴涓父鏁帮紙绾︾瓑浜3.141592654锛锛屾槸浠ｈ〃鍦嗗懆闀垮拰鐩村緞鐨勬瘮鍊笺6銆佸畠鏄竴涓棤鐞嗘暟锛屽嵆鏃...
绛旓細蟺鏄渾鐨勫懆闀垮拰鐩村緞鐨勬瘮鍊锛屽亣濡傜敾涓涓洿寰勪负2000鐨勫渾锛屾妸瀹冨垎鎴10浠斤紝瀹冪殑姣忔潯杈逛负618锛屾婚暱6180锛屾墍浠ュ渾鍛ㄧ巼绾︿负6180/2000=3.09锛屽鏋滃湪缁嗗垎锛屼細鎺ヨ繎浜3.14 鐨勫渾锛屽畠鐨勫懆闀垮彲浠ョ敤鏃犻檺鍒
绛旓細7828蟺=87.9229蟺=91.0630蟺=94.231蟺=97.3432蟺=100.4833蟺=103.6234蟺=106.7635蟺=109.936蟺=113.0437蟺=116.1838蟺=119.3239蟺=122.4640蟺=125.641蟺=128.7442蟺=131.8843蟺=135.0244蟺=138.1645蟺=141.346蟺=144.4447蟺=147.5848蟺=150.7249蟺=153.8650蟺=15751蟺=160.1452...
绛旓細鏄竴涓父鏁帮紙绾︾瓑浜3.141592654锛锛屾槸浠ｈ〃鍦嗗懆闀垮拰鐩村緞鐨勬瘮鍊笺4銆佸畠鏄竴涓棤鐞嗘暟锛屽嵆鏃犻檺涓嶅惊鐜皬鏁般傚湪鏃ュ父鐢熸椿涓紝閫氬父閮界敤3.14浠ｈ〃鍦嗗懆鐜囧幓杩涜杩戜技璁＄畻銆傝岀敤鍗佷綅灏忔暟3.141592654渚胯冻浠ュ簲浠樹竴鑸绠椼5銆佸嵆浣挎槸宸ョ▼甯堟垨鐗╃悊瀛﹀瑕佽繘琛岃緝绮惧瘑鐨勮绠楋紝鍏呭叾閲忎篃鍙渶鍙栧艰嚦灏忔暟鐐瑰悗鍑犵櫨涓綅銆
绛旓細61蟺=191.54锛62蟺=194.68锛63蟺=197.82锛64蟺=200.96锛65蟺=204.1锛66蟺=207.24锛67蟺=210.38锛68蟺=213.52锛69蟺=216.66锛70蟺=219.8 71蟺=222.94锛72蟺=226.08锛73蟺=229.22锛74蟺=232.36锛75蟺=235.5锛76蟺=238.64锛77蟺=241.78锛78蟺=244.92锛79蟺=248.06锛80...
绛旓細蟺鏄涓涓暟瀛﹀父鏁帮紝浠ｈ〃鍦嗙殑鍛ㄩ暱涓庣洿寰勪箣姣旓紝绾︾瓑浜3.14159265359銆傚畠鍙互鐢ㄤ簬瑙ｅ喅璁稿鏁板鍜岀墿鐞嗛棶棰橈紝渚嬪璁＄畻鍦嗙殑闈㈢Н銆佺悆浣撶Н銆佽绠楁尝闀跨瓑绛夈傚湪璁＄畻鏈虹瀛︿腑锛屜涔熺粡甯稿嚭鐜板湪鍥惧舰澶勭悊鍜屼俊鍙峰鐞嗕腑锛屼緥濡傝绠楀渾鐨勫潗鏍囩偣銆佹护娉㈠櫒璁捐绛夈
绛旓細2銆佅绾︾瓑浜3.141592654銆3銆佸渾鍛ㄧ巼鐢ㄥ笇鑵婂瓧姣 蟺锛堣浣減脿i锛夎〃绀猴紝鏄竴涓父鏁帮紙绾︾瓑浜3.141592654锛夛紝鏄唬琛ㄥ渾鍛ㄩ暱鍜岀洿寰勭殑姣斿笺4銆佸畠鏄竴涓棤鐞嗘暟锛屽嵆鏃犻檺涓嶅惊鐜皬鏁般傚湪鏃ュ父鐢熸椿涓紝閫氬父閮界敤3.14浠ｈ〃鍦嗗懆鐜囧幓杩涜杩戜技璁＄畻銆傝岀敤鍗佷綅灏忔暟3.141592654渚胯冻浠ュ簲浠樹竴鑸绠椼5銆佸嵆浣挎槸宸ョ▼甯堟垨鐗╃悊瀛...
绛旓細蟺鍙互涓ユ牸鍦板畾涔変负婊¤冻sin x = 0鐨勬渶灏忔瀹炴暟x銆傚渾鍛ㄧ巼鐢ㄥ笇鑵婂瓧姣 蟺锛堣浣減脿i锛夎〃绀猴紝鏄竴涓父鏁帮紙绾︾瓑浜3.141592654锛锛屾槸浠ｈ〃鍦嗗懆闀垮拰鐩村緞鐨勬瘮鍊笺傚畠鏄竴涓棤鐞嗘暟锛屽嵆鏃犻檺涓嶅惊鐜皬鏁般傚湪鏃ュ父鐢熸椿涓紝閫氬父閮界敤3.14浠ｈ〃鍦嗗懆鐜囧幓杩涜杩戜技璁＄畻銆傝岀敤鍗佷綅灏忔暟3.141592654渚胯冻浠ュ簲浠樹竴鑸绠椼
