pie = 3.14 how?

Question

pie = 3.14 how?

anonymous · Answer

can u prove it??

anonymous · Answer

it is the mathematical value of pi

shubhamsrg · Answer

take a bangle/ring/disk etc
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shubhamsrg · Answer

take a thread
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anonymous · Answer

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anonymous · Answer

no more ways to 3.14

shubhamsrg · Answer

now start wrapping the thread onto the bangle, start from a point, say A, wrap the thread onto the bangle tightly and reach back to A
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anonymous · Answer

so?

shubhamsrg · Answer

now carefully mark the points on the thread i.e.from where you started to where you ended.

Measure that distance on a scale.

shubhamsrg · Answer

That will give you the circumference of the circle.

shubhamsrg · Answer

You should be able to approximately figure out the center and hence the radius of the circle.

anonymous · Answer

π is technically a number not equal to 3.14, although it is very close. π is a ratio of a circle's circumference to it's diameter: 
C=D(π)
If we solve for π, we can clearly see that π=C/D.
Take the circumference of anything, circular nature, and divide it by the diameter of the object. You'll be faced with a number that is very close to π. Why does this happen? Well, it's a natural phenomena, like e... it has certain special properties that only happen with this number. One of the most special things about the equation y=e^x, if you were to take the slope, it's e^x. Besides y=0, it is one of the few easily accessible functions that are their own slope.
π has been calculated to about 1.24 trillion digits so far, still, although it is a better approximation than 3.14, it is still not the actual value of π.
The actual value of π is... π. 
If you ever use π in mathematics, never use a stupid approximation of 3.14, use the actual value: π, 3π is much better than 9.4248.

shubhamsrg · Answer

Use this :
circumference = 2 * pi * radius

and solve for pi
best of luck.

anonymous · Answer

it will be 3.14 right.... so  can we take it like 22/7 ?

hba · Answer

You can use buffon's needle to prove it,I guess.

Let me link you to the intersting dicussion we had.

shubhamsrg · Answer

22/7 is just a very bad rational approximation of pi.

anonymous · Answer

a?

anonymous · Answer

its easier than 3.14 isn't it?

hba · Answer

@shubhamsrg Can you link the person to the pi discussion we had.

parthkohli · Answer

By definition,$$\pi = \dfrac{\rm C}{d}$$

parthkohli · Answer

FOR ALL CIRCLES.

shubhamsrg · Answer

I don't actually remember if we had any discussion earlier! :P
sorry..

anonymous · Answer

but it will be 22/7

parthkohli · Answer

Also,$$\pi \ne 3.14$$

anonymous · Answer

isn't it??

parthkohli · Answer

$$\pi\approx 3.14$$

anonymous · Answer

no it is hard...

anonymous · Answer

can i know everybody from which country?

unklerhaukus · Answer

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