What is the value of PI?
401263
The value of pi can be expressed by infinite sums and calculations. John Wallis contributed this one-\n\npi/2 = 2/1 x 2/3 x 4/3 x 4/5 x 6/5 x 6/7 x 8/7 x 8/9...\n\nAnother one (Leibniz' formula)-\n\npi/4 = 1/1 - 1/3 + 1/5 -1/7 + 1/9 -1/11 + 1/13 - 1/15+...\n\nAnother way to express pi is the ratio n^2/ f(n) where the function f(n) is defined as the end result of a finite sequence that begins by subtracting 1 from n and then find the first multiple of (n-1) that is greater than or equal to the original number; and repeat the process beginning witih n-2 but look for a multiple greater than or equal to the previous multiple.\n\nFor example: if n=8, then n-1=7, and the first multiple of 7 greater than or equal to 8 is 14. Starting again with 8-2=6; the new multiple will be 18, which is the multiple of 6 greater than or equal to 14. Then start with 5 and find 20 as the multiple of 5 greater than or equal to 18. The multiple of 4 will be 20 also, since it is equal to the previous result. The multiple of 3 will be 21, and of 2 will be 22, which of course is also the multiple of 1. Thus, the value of f(8) is 22, using this method.\n\nSimilarly, f(2)=2, f(3)=4, and f(10)=34. Then, the ratio n^2/ f(n) goes to pi as n becomes larger and larger.
1077315
The square root of pi is approximately 1.772453851.
570380
π is the ratio of the circumference of a perfect circle to the  diameter. πD=circumference therefore π=(circumference/D.\n\nIt is a never ending number that goes 3.141592654...\n\nI have a whole book (30pages) of π printed. I had to finish my ink!
1151198
when you multiply 247474747474.5 with Pi, you will get 777777777777.... :)
97735
pi is a greek word taht denotes 22/7 and pi is not exactly equal to 3.14:Actually 4 every possible circle in the world, when the circumference is divided by the same circle's diameter(d) the result is constant and equal to 22/7, which is a universal constant.It is from this basic idea that the circumference(c) of any circle C=pi*d evolved
107783
sqrt(pi) ~= \n1.77245385090551602729\n8167483341145182797549\n4561223871282138077898\n5291128459103218137495\n0656738544665416226823\n6242825706662361528657\n2442260252509370960278\n7068462037698653105122\n8499251730289508262289\n3209537926796280017463\n9015351479720516700190\n1852340185854469744949\n1264031392177552590621\n6405419332500906398407\n6137334774751534336679\n8978936585183640879545\n1165161738760059067393\n4317913328098548462481\n8490205465485219561325\n1561647467515042738761\n0561079961271072100603\n7204448367236529661370\n8094323498831668424213\n8457096\n\nEnjoy!
303735
Don't use 3.142.Use 22/7 as the value of Pi.Its "pi" not "pie".Pi=3.142 (approx.).In reality it goes into hundreds of decimal points without terminating.However "pi" is also equal to the fraction 22/7.If you have trouble with the decimals substitute the fraction as the value of pi-it is acceptable.This way it will be easier for you to calculate sums without a calculator.Pi is basically just the constant ratio that exists between the circumference and radius of any circle.C/R=22/7.
915477
PI is not spelled like the pie you eat. \n\nThe area of a circle is found by multiplying pi (3.14) by the radius squared. The radius is half of the diameter so it is 3. the radius squared is 9, so multiply that by pi and get 28.26\n\nthe area is 28.26 square meters
357016
It means 10 times pi.  If you don't know what pi means, its that wacked up #, you know 3.141..............
573285
Since pi is an irrational, transcendental number, it cannot be "defined" by an integer division.\n\nIts definition is "the circumference of a circle divided by its diameter", conventionally denoted by the (lowercase Greek letter) π.\n\nIt's approximation is 3.14159265, and it is this "approximation" that is commonly represented as 22/7. But this is not the pi (π) itself.
20408
Impossible to answer.  Pi is an irrational number meaning that the numbers after the decimal will continue until infinity.  While supercomputers can give the number to "upteen" decimal places, we can never know the last decimal place.
829346
Whenever you want to use the pi value simply write Math.PI:\n\nclass MathFun\n{\n  private double far = ((double)5/9); // (5/9)\n  private double cel = ((double)9/5); // (9/5)\n  private double vol = ((double)4/3); // (4/3)\n    \n  public MathFun ( ) { }\n    \n  double fToC (double F)\n  {\n    double celsius = 5 * (F - 32) / 9;\n    return celsius;\n  }\n    \n  double cToF (double C)\n  {\n    double fahrenheit = 9 * (C + 32) / 5;\n    return fahrenheit;\n  }\n    \n  double calcSphere (double r)\n  {\n    double vol = 4/3;\n    double sqr = Math.pow(r,3);\n    double volume = vol * Math.PI * sqr;\n    return volume;    \n  }\n}\n\nRegards
166362
The number that you have here is only a good approximation to the actual value of PI. Others exist that are even better. Their common feature is that unlike PI itself, they are all rational, which is why each has an easy pattern, like the one you noticed just now, for this particular approximation. No easy pattern can be found for PI however, because, as has been said in so many answers, PI is irrational That is not enough though, sqrt(2) is also irrational and yet it has a clearly noticeable pattern, through continued fractions. To add to PI's misery however, it is also transcedental(sp?) and that probably explains why it is so hard to deal with PI, or with E, for that matter. Both are irrational and transcendents and in that respect are different from many other irrational numbers.\nHope that helps.
543735
A crude approximation to pi. The Babylonians had a better one 355/113 which is 3.141592
680200
Assuming this means a circle...\n\ndefn/:\n\nc=circurmfernce\nA=area\nr=radius\nd=diameter\npi=pi (~3.1415926...)\nd=2*r\n\nC=2*pi*r=d*pi\nA=pi*(r^2)...(area is pi*r squared...pie are squared-no there not their round).\nA=pi*(d^2)/4.\n\njust plug and chug...\n\nC=10*pi.\nA=25*pi.\n\nanswer:\n\nit's that simple
1092540
Pi is the ratio of the circumference of a circle to its diameter. To put it another way, it's the length of the circumference divided by the length of the diameter.\n\nPi always works out to be the same value, no matter what size the circle is. So Pi is a Big Deal because it lets you easily measure the length of the curved line that makes up a circle.\n\nPi = C/D, so if you know the diameter and Pi, you can calculate the circumference.\n\nIF you do the math, and divide the circumference by the diameter, you'll get 3.14159265358979323846264338327950288419716939937510.....\n-- where the dots represent the fact that no matter how long you keep dividing, it never comes out even and the pattern of numbers doesn't repeat. It has reportedly been calculated out to 206 billion digits!!\n\nThere are charts that describe the history of Pi, which goes back to the Babylonians (2000 BC), and how accurately (or inaccurately) Pi has been calculated through the years. I'm sorry I can't make it appear in neat columns here, but you can see it neatly if you go to external link\n\nEven though the rough value of Pi was known long before his time, the first theoretical calculation seems to have been carried out by Archimedes of Syracuse (287-212 BC).
40559
Just what are you asking? \n\nIf this were the Baking section, then you owe someone two pies. \n\nIf you are talking Math (this section), then I presume you are talking about PI (the value used in Circumference = 2 (PI) * radius, Area = PI * r^2, Volume = (1/3) PI * r^3). Following these derivations, I have no clue where PI^5 lies in Geometry.\n\nOr, finally, if you are thinking 3*PI - 5*PI, you get -2 * PI, or -2 * 3.14159..., = -6.28318...