Pi, How do you calculate it?

[NJHpro]

so wait that means in my geometry class i can just say irrational on a circumference test? or not possible?

[Creepyseven]

@NJHpro you could say that its irrational, but that doesnt mean it isnt possible. just give the sollution as a multiple of Pi. for example a circle with a radius of 5 would have a circumference of 10*Pi. its irrational but using the short form of pi you can easily right it down. you hand over the problem of defining pi to your teacher or whoever has to correct that shit.

[RollerCoasterMan555]

3.141592653589793...

[NickMinaj69]

I have a HUGE quesiton. If Pi is irrational... does that mean that the circumferance of a circle is always growing.. in the sense that pi never ends and is always is always bigger than you can calculate because you can always add one more digit?

[mathematicsonline]

@NickMinaj69 Yes there is an infinite number of digits in pi, but that doesn't mean the value of pi increases every time you add a digit. Pi will never be larger than 3.1416 no matter how many digits you calculate the accuracy of pi.

[NickMinaj69]

@mathematicsonline This is true, but that would mean that there is an upper limit to this growth at 3.1416.. however, wouldn't a circle's circumferance be continually increasing untill it "reached" some point N where, beyond which, Epsilon<0 for the Limit of 3.1416

[Tubewaytorpedo]

Really didn't understand it in my math books. Thank god there's YouTube..

[iasedu]

@Tubewaytorpedo You're stupid.

[Smartguy323]

I can also get pie by driving to Marie Calendars lol

All jokes aside, it was the easiest explanation for pi. I plan to use this video with my future students =)

[elena911000]

This is fantastic! I love this explanation! I got it now!!!

Thank you!

[flowiepanda]

you misspelled subscribe

[24thejessa]

. i love it.. nkkatulong k po.head down po.hehe

[edsolindia]

excellent work to promote mathematics. hope we get more in future. Abdul Rehman Khan

[SolidWorksFrank]

I love your videos

make more please :)

[RandomNacho24]

3.14159265359........

[sarahjacob2008]

Clear and precise. I think once I have got my daughter to physically do this, she will never have a problem working out the other formula to do with a circle.

[grotesqueMCR]

~~plzz upload on parabolic segment and area of ellipse

thak you sir!!

more power!!

[rubikskidcube]

great job!

[eklipst2x]

This does show how to calculate pi. Pi is the ratio between the circumference and diameter. The accuracy of your measurements is the accuracy of pi.

[Zee96969696]

yes, cool but how do we calculate Pi without having to measure it? didn't answer the question

[Kadda67]

This video doesn't answer its title. LAME

[hacky97]

this is not a way to calculate pi, it's a way to proof that pi is a constant number.

I think that the way to calculate pi is to divide a circle into small lines (who's points are acalculated with sinuses and cosinuses) and add the length of all these little lines together. the precision of pi depends on the number of lines you divide the circle into.

[minh9ftmn]

@hacky97 @hacky97 yeah thats how they find the value of pi

I read an article about an ithis indian guy who actually found some formulae fr calculating pi. His name is Srinivasa Ramanujan.

The incredible thing is no one even great mathematicians ever knew how he got those

[9114steve]

@hacky97 you are mistaken, you don't use sinuses to calculate pi you have to use nostrils.. Its a common mistake and easily confused for the beginner. ;-) you are funny!