what is the real number for pi?

Answer 1

Hi:

To answer your question you need to know what pi is : It is the ratio of a circle's circumference to it's diameter. it a constant number that never changes no matter how big or small the diameter of the circle you make. Start by cut some paper circles of varying diameters say 1 inch , 2 inch and 3 inch take a ruler and mark a spot on the edge of the paper circle and position that spot on the zero mark on the ruler. Then carefully roll the paper circle along the ruler and see where you end up as that point return to the bottom of the circle . This is the circumference now divide that number by the circle diameter, you should get a close value for pi. of about 3.1 or 3.2

Now to answer the second part of your question.
Back about three thousand years ago the ancient Egyptians estimated Pi to be about 3 units (you have to remember that their Mathematics were quite primitive and they had no algebra to help them at this time). Later the ancient Greeks developed and used the area of triangles filling a circle method to estimate pi to be between 22/7 and 3 10/71
around 240 B.C. However this was good enough for building things and such, but is was not good enough for mathematicans however. So a quest was started to find the true value for pi and various mehods were used to get a better and better estimate for the value of pi. In about the 15th and 16 th centry A.D. Various discovery where made about Pi:

1) Pi is irrational { Meaning it does not repeat itself ever ; like 1/3} and it's transcendental { Meaning that powers of and combination of powers of pi will not give finite whole numbers } So all formulae for computing pi will be infinitely long.

2) with the devolpment of Algbera and Calculus, certain series were found to give the approximate value of pi

PI= sqr ( 6*(1 + 1/(2^2)+ 1/(3^2)+ 1/ (4^2) + 1/(5^2).....) { sqr means Square root}

or

PI = 4*( 1- (1/3)+(1/5)-(1/7)+(1/9)- (1/11)......)

Those series take a long time to come to the value of Pi that we know Pi to be today. Which bring us to our era, when electronic computers where built, and as soon as they became avialable. Mathematican were able to comfirm those series to be the appoximate value of Pi , which are still in use today. it has been calulated the about couple hundred billion decimal places and is so well known that it is use to gauged the speed and power of all supercomputers and computers that made today and in the future to come. and it being surpassed in the number of decimal places to be counted in. and it pop up in some interesting places.

Here's the value of Pi to few thousand decimal places I got off the Internet:

3.
1415926535 8979323846 2643383279 5028841971 6939937510
5820974944 5923078164 0628620899 8628034825 3421170679
8214808651 3282306647 0938446095 5058223172 5359408128
4811174502 8410270193 8521105559 6446229489 5493038196
4428810975 6659334461 2847564823 3786783165 2712019091
4564856692 3460348610 4543266482 1339360726 0249141273
7245870066 0631558817 4881520920 9628292540 9171536436
7892590360 0113305305 4882046652 1384146951 9415116094
3305727036 5759591953 0921861173 8193261179 3105118548
0744623799 6274956735 1885752724 8912279381 8301194912
9833673362 4406566430 8602139494 6395224737 1907021798
6094370277 0539217176 2931767523 8467481846 7669405132
0005681271 4526356082 7785771342 7577896091 7363717872
1468440901 2249534301 4654958537 1050792279 6892589235
4201995611 2129021960 8640344181 5981362977 4771309960
5187072113 4999999837 2978049951 0597317328 1609631859
5024459455 3469083026 4252230825 3344685035 2619311881
7101000313 7838752886 5875332083 8142061717 7669147303
5982534904 2875546873 1159562863 8823537875 9375195778
1857780532 1712268066 1300192787 6611195909 2164201989

3809525720 1065485863 2788659361 5338182796 8230301952
0353018529 6899577362 2599413891 2497217752 8347913151
5574857242 4541506959 5082953311 6861727855 8890750983
8175463746 4939319255 0604009277 0167113900 9848824012
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9331367702 8989152104 7521620569 6602405803 8150193511
2533824300 3558764024 7496473263 9141992726 0426992279
6782354781 6360093417 2164121992 4586315030 2861829745
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8164706001 6145249192 1732172147 7235014144 1973568548
1613611573 5255213347 5741849468 4385233239 0739414333
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8279679766 8145410095 3883786360 9506800642 2512520511
7392984896 0841284886 2694560424 1965285022 2106611863
0674427862 2039194945 0471237137 8696095636 4371917287
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5709858387 4105978859 5977297549 8930161753 9284681382
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9009714909 6759852613 6554978189 3129784821 6829989487
2265880485 7564014270 4775551323 7964145152 3746234364
5428584447 9526586782 1051141354 7357395231 1342716610
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8191197939 9520614196 6342875444 0643745123 7181921799
9839101591 9561814675 1426912397 4894090718 6494231961

5679452080 9514655022 5231603881 9301420937 6213785595
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6549859461 6371802709 8199430992 4488957571 2828905923
2332609729 9712084433 5732654893 8239119325 9746366730
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2131449576 8572624334 4189303968 6426243410 7732269780
2807318915 4411010446 8232527162 0105265227 2111660396

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7805419341 4473774418 4263129860 8099888687 4132604721

5695162396 5864573021 6315981931 9516735381 2974167729
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4037014163 1496589794 0924323789 6907069779 4223625082
2168895738 3798623001 5937764716 5122893578 6015881617
5578297352 3344604281 5126272037 3431465319 7777416031
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9456127531 8134078330 3362542327 8394497538 2437205835
3114771199 2606381334 6776879695 9703098339 1307710987
0408591337 4641442822 7726346594 7047458784 7787201927
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4803048029 0058760758 2510474709 1643961362 6760449256
2742042083 2085661190 6254543372 1315359584 5068772460

2901618766 7952406163 4252257719 5429162991 9306455377
9914037340 4328752628 8896399587 9475729174 6426357455
2540790914 5135711136 9410911939 3251910760 2082520261
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2784768472 6860849003 3770242429 1651300500 5168323364
3503895170 2989392233 4517220138 1280696501 1784408745
1960121228 5993716231 3017114448 4640903890 6449544400
6198690754 8516026327 5052983491 8740786680 8818338510
2283345085 0486082503 9302133219 7155184306 3545500766
8282949304 1377655279 3975175461 3953984683 3936383047
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2827892125 0771262946 3229563989 8989358211 6745627010
2183564622 0134967151 8819097303 8119800497 3407239610
3685406643 1939509790 1906996395 5245300545 0580685501
9567302292 1913933918 5680344903 9820595510 0226353536
1920419947 4553859381 0234395544 9597783779 0237421617
2711172364 3435439478 2218185286 2408514006 6604433258
8856986705 4315470696 5747458550 3323233421 0730154594
0516553790 6866273337 9958511562 5784322988 2737231989
8757141595 7811196358 3300594087 3068121602 8764962867

4460477464 9159950549 7374256269 0104903778 1986835938
1465741268 0492564879 8556145372 3478673303 9046883834
3634655379 4986419270 5638729317 4872332083 7601123029
9113679386 2708943879 9362016295 1541337142 4892830722
0126901475 4668476535 7616477379 4675200490 7571555278
1965362132 3926406160 1363581559 0742202020 3187277605
2772190055 6148425551 8792530343 5139844253 2234157623
3610642506 3904975008 6562710953 5919465897 5141310348
2276930624 7435363256 9160781547 8181152843 6679570611
0861533150 4452127473 9245449454 2368288606 1340841486
3776700961 2071512491 4043027253 8607648236 3414334623
5189757664 5216413767 9690314950 1910857598 4423919862
9164219399 4907236234 6468441173 9403265918 4044378051
3338945257 4239950829 6591228508 5558215725 0310712570
1266830240 2929525220 1187267675 6220415420 5161841634
8475651699 9811614101 0029960783 8690929160 3028840026
9104140792 8862150784 2451670908 7000699282 1206604183
7180653556 7252532567 5328612910 4248776182 5829765157
9598470356 2226293486 0034158722 9805349896 5022629174
8788202734 2092222453 3985626476 6914905562 8425039127

5771028402 7998066365 8254889264 8802545661 0172967026
6407655904 2909945681 5065265305 3718294127 0336931378
5178609040 7086671149 6558343434 7693385781 7113864558
7367812301 4587687126 6034891390 9562009939 3610310291
6161528813 8437909904 2317473363 9480457593 1493140529
7634757481 1935670911 0137751721 0080315590 2485309066
9203767192 2033229094 3346768514 2214477379 3937517034
4366199104 0337511173 5471918550 4644902636 5512816228
8244625759 1633303910 7225383742 1821408835 0865739177
1509682887 4782656995 9957449066 1758344137 5223970968
3408005355 9849175417 3818839994 4697486762 6551658276
5848358845 3142775687 9002909517 0283529716 3445621296
4043523117 6006651012 4120065975 5851276178 5838292041
9748442360 8007193045 7618932349 2292796501 9875187212
7267507981 2554709589 0455635792 1221033346 6974992356
3025494780 2490114195 2123828153 0911407907 3860251522
7429958180 7247162591 6685451333 1239480494 7079119153
2673430282 4418604142 6363954800 0448002670 4962482017
9289647669 7583183271 3142517029 6923488962 7668440323
2609275249 6035799646 9256504936 8183609003 2380929345

9588970695 3653494060 3402166544 3755890045 6328822505
4525564056 4482465151 8754711962 1844396582 5337543885
6909411303 1509526179 3780029741 2076651479 3942590298
9695946995 5657612186 5619673378 6236256125 2163208628
6922210327 4889218654 3648022967 8070576561 5144632046
9279068212 0738837781 4233562823 6089632080 6822246801
2248261177 1858963814 0918390367 3672220888 3215137556
0037279839 4004152970 0287830766 7094447456 0134556417
2543709069 7939612257 1429894671 5435784687 8861444581
2314593571 9849225284 7160504922 1242470141 2147805734
5510500801 9086996033 0276347870 8108175450 1193071412
2339086639 3833952942 5786905076 4310063835 1983438934
1596131854 3475464955 6978103829 3097164651 4384070070
7360411237 3599843452 2516105070 2705623526 6012764848
3084076118 3013052793 2054274628 6540360367 4532865105
7065874882 2569815793 6789766974 2205750596 8344086973
5020141020 6723585020 0724522563 2651341055 9240190274
2162484391 4035998953 5394590944 0704691209 1409387001
2645600162 3742880210 9276457931 0657922955 2498872758
4610126483 6999892256 9596881592 0560010165 5256375678

5667227966 1988578279 4848855834 3975187445 4551296563
4434803966 4205579829 3680435220 2770984294 2325330225
7634180703 9476994159 7915945300 6975214829 3366555661
5678736400 5366656416 5473217043 9035213295 4352916941
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0234529244 0773659495 6305100742 1087142613 4974595615
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1963403911 4732023380 7150952220 1068256342 7471646024
3354400515 2126693249 3419673977 0415956837 5355516673
0273900749 7297363549 6453328886 9844061196 4961627734
4951827369 5588220757 3551766515 8985519098 6665393549
4810688732 0685990754 0792342402 3009259007 0173196036
2254756478 9406475483 4664776041 1463233905 6513433068
4495397907 0903023460 4614709616 9688688501 4083470405
4607429586 9913829668 2468185710 3188790652 8703665083
2431974404 7718556789 3482308943 1068287027 2280973624
8093996270 6074726455 3992539944 2808113736 9433887294
0630792615 9599546262 4629707062 5948455690 3471197299
6409089418 0595343932 5123623550 8134949004 3642785271

3831591256 8989295196 4272875739 4691427253 4366941532
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0298865925 7866285612 4966552353 3829428785 4253404830
8330701653 7228563559 1525347844 5981831341 1290019992
0598135220 5117336585 6407826484 9427644113 7639386692
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3343657791 6012809317 9401718598 5999338492 3549564005
7099558561 1349802524 9906698423 3017350358 0440811685
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1080485485 2635722825 7682034160 5048466277 5045003126
2008007998 0492548534 6941469775 1649327095 0493463938
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9391760426 0176338704 5499017614 3641204692 1823707648
8783419689 6861181558 1587360629 3860381017 1215855272
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6435495561 8689641122 8214075330 2655100424 1048967835
2858829024 3670904887 1181909094 9453314421 8287661810
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6640075094 2608788573 5796037324 5141467867 0368809880
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2751674573 1891894562 8352570441 3354375857 5342698699

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2611341461 1068026744 6637334375 3407642940 2668297386
5220935701 6263846485 2851490362 9320199199 6882851718
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7806101371 5004489917 2100222013 3501310601 6391541589
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7914710869 9843157337 4964883529 2769328220 7629472823

8153740996 1545598798 2598910937 1712621828 3025848112
3890119682 2142945766 7580718653 8065064870 2613389282
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6778113949 8616478747 1407932638 5873862473 2889645643
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5829486191 9667091895 8089833201 2103184303 4012849511
6203534280 1441276172 8583024355 9830032042 0245120728
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0425845988 4199076112 8725805911 3935689601 4316682831
7632356732 5417073420 8173322304 6298799280 4908514094
7903688786 8789493054 6955703072 6190095020 7643349335
9106024545 0864536289 3545686295 8531315337 1838682656
1786227363 7169757741 8302398600 6591481616 4049449650
1173213138 9574706208 8474802365 3710311508 9842799275

4426853277 9743113951 4357417221 9759799359 6852522857
4526379628 9612691572 3579866205 7340837576 6873884266
4059909935 0500081337 5432454635 9675048442 3528487470
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8654489377 6979566517 2796623267 1481033864 3913751865
9467300244 3450054499 5399742372 3287124948 3470604406
3471606325 8306498297 9551010954 1836235030 3094530973
3583446283 9476304775 6450150085 0757894954 8931393944
8992161255 2559770143 6858943585 8775263796 2559708167
7643800125 4365023714 1278346792 6101995585 2247172201
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9409653041 1183066710 8189303110 8871728167 5195796753
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3795826061 6211842368 7685114183 1606831586 7994601652
0577405294 2305360178 0313357263 2670547903 3840125730

5912339601 8801378254 2192709476 7337191987 2873852480
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4042033113 5793365424 2630356145 7009011244 8008900208
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8650728905 3285485614 3316081269 3005693785 4178610969
6920253886 5034577183 1766868859 2368148847 5276498468

8219497397 2970773718 7188400414 3231276365 0481453112
2850990020 7424092558 5925292610 3021067368 1543470152
5234878635 1643976235 8604191941 2969769040 5264832347
0099111542 4260127343 8022089331 0966863678 9869497799
4001260164 2276092608 2349304118 0643829138 3473546797
2539926233 8791582998 4864592717 3405922562 0749105308
5315371829 1168163721 9395188700 9577881815 8685046450
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5637695252 3265361442 4780230826 8118310377 3588708924
0613031336 4773710116 2821461466 1679404090 5186152603
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4435021828 7026685610 6650035310 5021631820 6017609217
9846849368 6316129372 7951873078 9726373537 1715025637
8733579771 8081848784 5886650433 5824377004 1477104149
3492743845 7587107159 7315594394 2641257027 0965125108
1155482479 3940359768 1188117282 4721582501 0949609662
5393395380 9221955919 1818855267 8062149923 1727631632

1833989693 8075616855 9117529984 5013206712 9392404144
5938623988 0938124045 2191484831 6462101473 8918251010
9096773869 0664041589 7361047643 6500068077 1056567184
8628149637 1118832192 4456639458 1449148616 5500495676
9826903089 1118568798 6929470513 5248160917 4324301538
3684707292 8989828460 2223730145 2655679898 6277679680
9146979837 8268764311 5988321090 4371561129 9766521539
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7054072141 9852121067 3433241075 6767575818 4569906930
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5851578873 5343081552 0811772071 8803791040 4698306957
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4845035477 6315670255 3900654231 1792015346 4977929066
2415083288 5839529054 2637687668 9688050333 1722780018
5885069736 2324038947 0047189761 9347344308 4374437599
2503417880 7972235859 1342458131 4404984770 1732361694
7197657153 5319775499 7162785663 1190469126 0918259124

9890367654 1769799036 2375528652 6375733763 5269693443
5440047306 7198868901 9681474287 6779086697 9688522501
6369498567 3021752313 2529265375 8964151714 7955953878
4278499866 4563028788 3196209983 0494519874 3963690706
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8957037611 0532360629 8674803779 1537675115 8304320849
8720920280 9297526498 1256916342 5000522908 8726469252
8466610466 5392171482 0801305022 9805263783 6426959733
7070539227 8915351056 8883938113 2497570713 3102950443
0346715989 4487868471 1643832805 0692507766 2745001220
0352620370 9466023414 6489983902 5258883014 8678162196
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1546199305 0983869825 4284640725 5540927403 1325716326
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5633485820 3651461418 7004920570 4372018261 7331947157
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1054753612 9404746010 0094095444 9596628814 8691590389
9071865980 5636171376 9222729076 4197755177 7201042764
9694961105 6220592502 4202177042 6962215495 8726453989

2276976603 1052498085 5759471631 0758701332 0886146326
6412591148 6338812202 8444069416 9488261529 5776253250
1987035987 0674380469 8219420563 8125583343 6421949232
2759372212 8905642094 3082352544 0841108645 4536940496
9271494003 3197828613 1818618881 1118408257 8659287574
2638445005 9944229568 5864604810 3301538891 1499486935
4360302218 1094346676 4000022362 5505736312 9462629609
6198760564 2599639461 3869233083 7196265954 7392346241
3459779574 8524647837 9807956931 9865081597 7675350553
9189911513 3525229873 6112779182 7485420086 8953965835
9421963331 5028695611 9201229888 9887006079 9927954111
8826902307 8913107603 6176347794 8943203210 2773359416
9086500719 3280401716 3840644987 8717537567 8118532132
8408216571 1075495282 9497493621 4608215583 2056872321
8557406516 1096274874 3750980922 3021160998 2633033915

Answer 2

Pi is an irrational number, meaning, that it's a non-terminating and non-repeating decimal. The number 3.14 blah blah is just an approximation. No one really knows the value of pi. It's very long that experts today are still trying to find what's the next number after the other. Anyway, in approximation, pi is 3.1415926535897932384626433832795. If you wanna memorize the first 15 numbers of pi, just memorize this: "How I love a drink alcoholic of course, after the heavy lectures involving Quantum Mechanics". How has 3 letters, the first number in pi, I - 1, love- 4, a - 1, drink - 5, alcoholic - 9 and so on...

Answer 3

Pi and 0 are both real numbers. Pi is not an estimate and even if it were it would still be a real number. All rational numbers (those that can be expressed as a whole number with a prime factor) and irrational numbers (those that cannot be represented in this manner) fall into this set (including negatives). Pi is an irrational number that describes a natural proportion based on the circumference of a circle when compared to its radius. Zero (0) is a rational number (although ironically is also the only number that has a variety, indeed an infinite number, of prime factors). Imaginary numbers do not fall into this set and can be thought of as real number multiples of the square root of negative one.

Answer 4

The first ten digits of pi are 3.141592654, although the approximations 3.14 or 3 1/7 are sufficiently accurate for many calculations.

Answer 5

Pi is 22/7. It is impossible to solve for every digit of pi, but people have gotten to millions of placements.

Answer 6

Pi is the ratio of a circle's circumference to its diameter (or the ratio of a circle's area to the area of a square whose side is the radius. It is an irrational number.

Pi is commonly written as 3.14159 - but can be written out to 50 decimal places or more.

Answer 7

The mathematical constant π is an irrational number, approximately equal to 3.14159, which is the ratio of a circle's circumference to its diameter in Euclidean geometry, and has many uses in mathematics, physics, and engineering. Pi is also known as Archimedes' constant.

The numerical value of π, truncated to 50 decimal places is:

3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510

Answer 8

most math books will just say use 3.14 but use a graphing calculator press the pi button and then enter

Answer 9

you cant ask that question most people use it as 3 or 3.14 it goes on forever people have memorized hundreds or numbers after the decimal so ask them

Answer 10

3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510
Pi has an infinite number of digits after the dot, do you cannot write the whole number down.