Відео

Do you know there’s a cum in a circumference

In my career of pipe welding/fitting...I put to memory...Pi X Diameter = Circumference. Use this for making laterals. Like a 12" on a 12"branch. I like the "long" method. Making a template out of .025" paper board. (like the paperboard cereal boxes are made from). I make the branch...Using Pi X Diameter to get the "stretch out" of the pipe (for the branch). There are several steps after this. Don't feel like writing them all out. Tape up the stretched out part so it is round, then mark the hole where the branch will go. Cut out the hole for the branch, grind it, then tack up the branch in place. Last, weld it out so there are no leaks.

π is equal to ∞. If you mean otherwise show me the last digit of π.

Its a beautiful proof. But I have one question. The realtionship you derived in the form of r1 + r2 + r3 is only applicable to an octagon. And so is the area formula you wrote down for the frustums and cones. So when you increase the sides of the polygon, shouldn't the area formula and the r1+r2+r3 relationship become wrong? Why is that allowed?

Nice

All d comments are highly complimentary to your method of explanation , because u illustrated the Pythagoras concept very well .Tq. Iike ur ecplanation also. Very good.

That the smaller angles show the proportionality of the coresponding smaller areas on the sides is a good rationale. I hope I have made myself clear to state the author's concept.

Thanks

Thank you

isn't it just the sum of the edges of an infinite number of cylinders? Just the circumference times dx

Wow

A teacher told me the formula over 65 years ago and I’ve never needed anyone to prove it.

😂

Yeah, you want more pie... Then go the gym, build bigger muscles. Buy a better style of clothing, and trim your hair artistically

Simple & *Short* You saved my *Time*

Understanding how this thing works is way better than memorizing all the formulas in the Geometry

wow this explains those concepts so well but doesn't get enough attention while most brain-rot or TikTok videos got millions of views this channel is definitely underrated and also most of the educational channels as a UA-cam creator, I started because I also wanted everyone to study so the world could be a better place but many kids my age keep watching Skibidy toilet things and I am trying to draw their attention by making cat memes and baiting them to study but it seems that it didn't work so well also, I'm broke and need to pay students depth :)) anyways I'm subscribing :D and sorry if my English sucks it's my 5th language

This is the clearest explanation u can get online. Thanks

Why does it turn out to be pi every time you divide circumference by diameter?

Very nice

It was explained to me in grade school but.....I forgot.

So i imagine the person who came up with this sat struggling trying to figure out how to get a clean equation with a and b and x and y easily identifiable

It's still no a perfect rectangle 😂

π

Excellent explanation

Please sir make a video on surface area of a cone with animation. I have subscribed your channel.

But this is cheating; the tabulation of the sin function depends on knowing pi. So it doesn't Calculate pi from first principles.

WOOW!!

But if we physically cannot make a perfect Circle how do we measure the circumference??

Nice! short, clear and precise. Thank you! Nevermind the music

It's crystal clear. I can use this way to enhance students understanding. The way I like that

I feel pi is the constant increase in separation of a circle when it’s offset so the lines don’t meet so it’s a spiral starting at a center point. Because it’s three portions of different size triangles to needed to measure the increase in separation of the spiral from one line to the next.

This analogy is wrong the angles at the center point don’t play a role in this yet in this video they do

1:28 when n tends to infinity, triangle will become straight line, so concept of similar triangle is no longer valid.

1:04 split it into 10^303 parts

(R + r)/r where R = large radius and r = small radius. (3 + 1)/1 = 4.

Thank you so much! It just clicked for me perfectly! 😊

Let me explain the fourth one: THE FOURTH Say you have two points A and C, a line exists between them AC. Somewhere in between A and C is point B (let's say half way to make it easier), a line exists between point A and B as well as B and C so that you have two components of line AC that is to say AB and BC. The idea is that the line segment AB and BC together coincide with the super line AC so we can say that AB + BC = AC. That is what is meant by things that coincide are equal to one another. THE FIFTH There is a fifth one which strongly relates to the fourth. Axiom 5 states "the whole is greater than the part"... the idea is simple, essentially given the first example, the first component AB is less than the whole thing so we can say AC > AB or AC > BC. If you are given three things that coincide, say AB and BC and XY, where AB and BC make AC and XY is the same length as AC then we can say AB + BC = AC = XY (4th axiom)... then we can also say XY > AB and XY > BC yet XY = AC since they are equally as great then any of their subcomponents (5th axiom). THE SIXTH AND SEVENTH (useless to even mention) There is also a 6th and 7th axiom which are strongly related to each other. The six and seventh state "(6) things that are double of the same things are equal to each other and (7) things that are halves of the same things are equal to each other." Say you have two identical circles with radii r1 and r2 with diameters as d1 and d2 respectively. Since the circles are identical, using both axioms 6 and 7, we can say that r1 = r2 and d1 = d2. These last two are very obvious and not even worth mentioning tbh.

Most beautiful explanation of ellipse on internet

Pi was discovered when scientists used George Michael’s butt to calibrate their instruments

That's why it's 1/3

Me: *Sees elegant* *Headmaster Henry Henderson enters the chat*

I subscribed to your channel years ago when I was in school. I watched all your videos on visual explanation of volumes and surface area of sphere. They were really cool and helped me get my understanding towards math stronger. You are one of the youtubers that I credit for my good mathematics. I love maths ❤

Bro said measure the circumference and divide it by diameter to get the circumference. As far as I know that's crazy talk and make no sense to me. Not my world tho.

Brain Loading…

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oi oi oi

Carry

I came here to derive the formula of area of circle by integration😅😅 came here just to confirm that circle's length is equal to its perimetre

Ya, Exactly, This is the proof I'm asking for. Everywhere in the Internet people are using "The result itself" to prove the result or using triangle inequality to prove this result but triangle inequality is based on this result, so thank you so much