what does pi (3.14 or 22/7) refers to? and what does it mean?
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
862969
pi*(radius)^2*height\n\npi is aprox. 3.14 or 22/7
253760
well u need it in mensuration when u need 2 find the area of a circle and stuff. it's a very imp constant whose value i 22/7 or 3.14\nalso, 180 degrees = pi radian which u need in physics and calculas
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!
280930
I don't know this equation, but pi is the greek letter P. it can be used for any variable, but since it is widely accepted as the constant 3.1415 (= a circles circumference divided by its diameter) this would be a dumb decision.\n\nFor example when you need to sum many values, you use the Sigma, but for multiplying many values you use the big PI.\n\ngrtz,\nGB
195921
Pi is 3.14159265 and is the ratio of the circumference of a circle to its diameter\n\nPhi is 1.61803399 and is known as the golden ratio, evident in everything from rose petals, the building of the pyramids and the painting of the mona lisa.
300967
There is no complete number. Pi just goes on and on and on. The best I could approximation I can give you is 3.14 or 22/7
234883
The symbol p is called pi and is approximately equal to 22/7 or 3.141592654 , most high school teachers use it to two decimal places as 3.14\np is the ratio between the circumference and the diameter of a circle ..i.e \np = (circumference / diameter ).\nInterestingly the value of p is the same for any circle ... \n\nArea of circle = p x ( radius x radius ) = p radius2\n\nif the Radius = R \nthen \nArea of circle = pR2 = p x R x R \n\nHere's an example:\nFind the area of the circle with radius 10 cm ..use p as 3.14\nAnswer\nHere we have :\nRadius = 10 cm\np = 3.14\n\nUsing the formula Area of circle = p radius2 = p x radius x radius \n\nreplacing radius with 10 cm and p with 3.14 in above formula we have\n\nArea of circle = p radius2 = p x radius x radius = 3.14 x 10cm x 10cm = 3.14 x 100 cm2 = 314 cm2
812201
79.59 = (1/3)(2^2 pi)h\n79.59 = (1/3)(4pi) h\n3(79.59)/(4pi) = h\n19.0007 = h
504982
Pi is not 22/7. The fraction 22/7 is just an approximation to pi. A better one is 355/113, but both are just approximations. Pi itself cannot be written as a fraction involving two whole numbers. It is defined as the ratio of the circumference of a circle to the diameter of that circle. This ratio was approximated by the ancient Egyptians and Babylonians. The Greek Archimedes showed that pi is between 3+10/71 and 3+1/7.\n\nIt has been shown that pi cannot be the solution of any polynomial equation involving intefers as coefficients. In other words, it is transcendental.
407637
The question is a little faulty but I think I know what you meant.\n\nIf d is 30.5, then r is half that, 15.25.  You mean pi which is about 3.14.\n\nIf I use that value of pi, and r is 15.25, then area is pi r squared, or 3.14 x 15.25 x 15.25 which is 730.24625.\n\nUsing a better value of pi, I got 730.61664.
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.
220081
I think you meen pi, not pie. Pi is an irrational number, meaning that you can't write out the whole number. A good aprox value is 355/113. Here's the 1st 50 digits:\n3.14159265358979323846264338327950288419716939937510
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.
127322
I don't know why people use 22/7 as an approximation for pi when another, easily remembered, ratio gives a much better approximation:\n\nWrite each of the first three odd numbers twice:\n113355\nUse the first three digits as the denominator and the last three as the numerator:\n355/113\nThis gives an approximation of pi that is accurate to 6 digits. 22/7 is only accurate to 2 digits:\n\n3.14159265 = pi\n3.14159292 = 355/113\n3.14285714 = 22/7
267368
Pi is defined as a circle's circumference divided by its diameter. No matter what the radius of the circle is, when you divide those quantities, you'll get pi. \n\nHere's the weird thing: pi is more than just an irrational number. It's also a *transcendental* number, so "it \ncannot be the root of an algebraic equation with a finite number of terms." Quoted from the link below.
357016
It means 10 times pi.  If you don't know what pi means, its that wacked up #, you know 3.141..............