Surface Area of a Cone Formula Derivation Concept with Visual Easy Approach

[@nora_8080]

I can't thank you enough for this. When you study for yourself, you learn to memorize some simple formulas and never really question where they come from, but now that I have to explain math to other students I find that there is a mountain of stuff I didn't know about math and geometry.

[@MathematicsTutor]

Thanks for sharing. Same Here!
It is all part of Learning!

[@guptagsaurabh]

I also like his mathematical elegance.... the way he uses simple concepts to explain complex ones.

[@MOONLINETHAKUR]

Hello nora

[@nora_8080]

@@MOONLINETHAKUR Hi!

[@femioyewole815]

Time has got nothing on this video. Very well explained.100 years from now ,it would still be useful to generations to come.

[@dawon7750]

Thanks a lot sir! So kind of you to go into needed details!

[@prayas2.0jeebatchquestions5]

Amazing' lecture

[@MathematicsTutor]

Thanks

[@simonsadiq]

The best ever explanation! thanks for sharing!

[@amarnath802]

Excellent explanation of curve surface area of right angle circular cone

[@gerarddonovan4145]

Excellent

[@MathematicsTutor]

Thanks. Playlist for you: ruclips.net/video/BzVzq_ehgXs/видео.html

[@fuadkhanmd]

Except for the early portion of the autofocus (and I almost moved away), I think this is one of the best educational video. Making sure we follow every step perfectly. Bravo

[@valkaivalvarthakey9351]

Sir u r very expert sir

[@deepmalarai818]

Great work👏

[@vijayreddy779]

nice explanation sir i watched many videos to derive cone csa this is the best thank you very much nice voice also

[@SerenitySong6]

I've looked at a few proofs for this and this was the simplest and most elegant

[@gaaraofddarkness]

beautiful way to visualize...thanks a lot

[@dritanbeqiraj4764]

Thanks to this explanation i got an A in math.Thank you very muchh.

[@shaloamnenja12yearsago29]

My teachers completely overlooked this, thank you so much.

[@biohistoryfacts9060]

Thank you sir,
your explanation is great.

[@Batman_yt..]

Great explanation sir

[@ydufy867]

That's really good

[@uzairmuhammad5853]

Great!

[@ryantay867]

Slow and easy, great work! Nice video

[@gunsshekharraman3907]

Thanks sir it was good 👍

[@mitchelmacey7788]

Thank you for the great explanation. The pacing was perfect. This is such a difficult thing to visualize as one part depends on your knowledge of another mathematical concept.

[@MathematicsTutor]

Thanks for your time and appreciation.

[@muniraosman9670]

Thank you for your help. I’m so glad to find out this amazing video. Your explanation was perfect! Thank you again 🙏

[@vrindha823]

Really nice class sir

[@sivaramk2325]

very nice explanation

[@pratiksirsath9046]

We can simply find area by simple sector area formula like
2πl(theta/360°)= 2πr....(1)
πl²(theta/360°)= Curved surface Area of cone
And now substituting the value of (theta/360°) that we got from equation 1 now we get formula (πrl).

[@dktchr3332]

Except for the autofocus problems early on, nice geometric treatment of the lateral surface (+/- the base) area of a cone. Presentation also hints at a Riemann sum/integral as a solution for those who are interested.

[@r.kcreations1765]

This make my doubt clear .thanks very much sir.Bring more such type of vedio .

[@MathematicsTutor]

Thanks. Here is related Playlist: ruclips.net/video/BzVzq_ehgXs/видео.html

[@roohifatma7014]

Very good explanation thankyou sir it helped me a lot, you are a genius

[@kavita3054]

Very nice

[@diyaanoop593]

that was helpful 👍🏼👍🏼tysm

[@Smitty-op4ld]

Couldn't find any video on this only the formula, but I couldn't settle without knowing where they came up with the multiplier.

[@sujitsingh9554]

Best explaination so far. I think we can do the same technique of yours to also determine area of circle itself. πr^2

[@MathematicsTutor]

Yes, Thanks

[@bijoylove123]

The best xplanation ever... Fr dis derivation

[@MathematicsTutor]

Thanks for appreciation

[@AyushKumar-qw7jo]

Thanks for telling such a simple way ❤️

[@sourabhbhartiya6369]

Really ,,it was a great explanation ......

[@MathematicsTutor]

Thanks a lot

[@pratijitpodder4345]

I would’ve never thought of that.

[@shashwat1330]

Thank you for the derivation. It was very nice.

[@jayeshsolanki4633]

Thank you sir

[@hunarbhardwaj9397]

sir literally op sir u r great

[@devendrasingh5192]

bhut acche se smajh aaya...

[@luckybeautyparlour7]

Devendra singh very nice derivation present by you

[@MathematicsTutor]

Thanks for appreciation. Bahut Bahut Dhanayavaad!

[@KingChronoss]

Beautiful. Don't know why I couldn't figure out why the cone portion wouldn't be Circumference * Slant but you broke it down amazingly.

[@MathematicsTutor]

Thanks for appreciation and your time.

[@lonewolf5138]

Thank you Sir for such a good stuff

[@MathematicsTutor]

Thanks for appreciation

[@sampatiraosonia7052]

Thanku sir

[@sambangiganapathirao5094]

What is the blurr in middle of the very video

[@adityaprakash2779]

Why to make it so difficult sir
Area of a sector= pi * r^2 * (length of arc/(2*pi*r))
In his case
Radius r is l
Length of arc is 2*pi*r
So
=pi*l^2*(2*pi*r/(2*pi*l)) = pi*r*l

[@ukidding]

thanks

[@slightlygruff]

Why did you draw it like a parallelogram? Should have drawn it as a rectangle from the get go. Other than that, great vid!

[@jtflypegasus]

Nice derivation without the use of integral calculus....✔

[@cursebr2937]

How is the area of trapezium the slant height and product of base length

[@cursebr2937]

Did u mean rectangles

[@henrycarpenter5733]

Excellent pacing, but the focus kept shifting, and your r's look like v's!

[@MohammadAliKhann]

Problem of camera.

[@unfair2856]

Turn autofocus off pls

[@manishajangra8592]

2πr is the circumference of whole circle, how can you take 2πr in case of sector

[@MathematicsTutor]

Since small r is the circle spread out radius

[@manishajangra8592]

@@MathematicsTutor I want to ask 2πr is the circumference of whole circle, so lenght of the sector should be 2 πr( angle between both L)/360°. Plg clear this. I am still confused

[@timothymcdonnell1186]

@@manishajangra8592 The sector in question is of a circle of radius L. The arc is the same as the circumference of the base circle, i.e. 2πr.

[@umedduhan9065]

Video is not clear

[@udaysampat7984]

Keep your camera straight

[@MathematicsTutor]

Thanks a lot for the suggestion. Hearing from you after a long time. I am still struggling with the old equipment. Hope to replace it soon. Thanks

[@omprakashsingh7652]

Volume sir

[@MathematicsTutor]

Playlist for you: ruclips.net/video/6aZXxjxwTzY/видео.html
Thanks

[@DazHuang72]

So basically calculus

[@goldisingh9156]

Improve your vedio quality

[@tanishqingle7316]

Its too blur to understand

[@sparshchawla3601]

Blurry thing in the video is causing distractions. Can’t watch for even a minute.

[@MalkhanSingh-ih3ky]

Blurring is distracting. Not watch even 1 min

[@madhurrajput2549]

Saal bhar ki bana leta video

[@abdulrazzak879]

waste

[@MathematicsTutor]

Thanks

[@abdulrazzak879]

there is no clarity only what thanks

[@MathematicsTutor]

Yes, I also think so. Will improve. Watch the current videos. Thanks

[@MathematicsTutor]

Improved a bit: ruclips.net/video/rn5qBbduco4/видео.html
Let me know if that helps. Thanks

[@davidbanahene307]

abdul razzak foolish comment ever on RUclips. Jerk

[@100rabhish]

WORST EXPLANATION..

[@davidbanahene307]

Worst comment

[@HunterAabid]

Thanks

[@dipikabharati4302]

Thank you sir

[@kashishnegi_cse_2417]

Thanks