Surface Area of a Cylinder | Maths | FuseSchool

Surface Area of a Cylinder | Maths | FuseSchool
Learn how to work out the surface area of a cylinder in this Maths video from FuseSchool as part of the Mensuration topic.
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[@hoangduynguyen3510]

useful video! My math teacher made it so hard to understand, now it seemes alot easier. Thank you

[@YousefMohamed-fn6oi]

turns out im stupid, we have been taking this from the start of the year i didn't bother to understand untill one day before the exam from this video. Ty

[@owais_syed8261]

Only two years late but did u pass or fail the exam

[@peacemends8899]

Thank you so much this video was so helpful

[@MiViLiX]

Or just remember this formula: 2 πr (h+r)

[@Chetannjo]

formulas-
closed cylinder surface area-2nr squared+ ndh
open cylinder - nr squared +ndh
volume of cylinder -2nr squared *h
pipe cylinder-ndh

[@CR4ZYKICK116]

Thanks so much! This helped me a lot!

[@tiffanychan5737]

thank you soooo. very. much. here's a like, comment, and sub!

[@fuseschool]

thank you!!!

[@timethomas8169]

Thank you alot for the video. very helpful. great job.

[@JuliaRaven]

Thank you! Turns out my teacher was giving us the wrong formula...

[@fuseschool]

We all make mistakes sometimes!!

[@ritz2156]

Lol

[@el_duck6577]

only 90s kids will remember beyblades

[@zienoo]

@@el_duck6577 im not trying to be funny or anything but literally who asked?

[@wukong5653]

Awesome.

[@whenikickjiminout7849]

This really helps thanks so much!

[@nigelaaronclement7680]

Thanks this really helped me

[@beautyqueen771]

I got lost in the middle of the video but then I repeated it and I understood it
thanks a lot that was helpful

[@IAMGERF]

This was something nothing and no one was teaching me, now i finally know and i just completed my homework! Thank you!

[@TheFlyguy31]

Absolutely brilliant

[@maks758]

thanks

[@huhfizzz5110]

useful video thanks

[@amiitt]

Thanks for the formula, quite helpful!

[@spadds]

A clear video. Thanks! I wish I could remember all of these formulas - I'd be a genius then!

[@yazanaldinho4775]

thanks you very much i was stuck on the width of the rectangle but now ik that i have to workout the circumference for the circle ,again thank you ver much

[@bert5374]

this helped cheers

[@michaelleon6584]

thank you. :)

[@ritz2156]

Thank u sir

[@issieharris7967]

So helpful for my maths test tomorrow!

[@fuseschool]

Hope it went well!!

[@issieharris7967]

FuseSchool - Global Education it did I came top in my year group!!!!

[@fuseschool]

Amazing - well done!!

[@amandasousamartins5080]

Great

[@Lakersfan122410]

Thak u so much

[@annir7124]

helpful

[@sakhak751]

I like how you added the diameter

[@shanerogers4277]

Thank you, great help.

[@fuseschool]

Glad it helped!

[@imajinxnation9020]

What if there is a problem where they use length instead of height, is it still the same formula?

[@vmangamingvmangaming9823]

Helpful

[@skelstrike7730]

i have a question where it gives me the surface area and diameter but not the height which is what they want... how would you work that out?

[@fuseschool]

You work backwards, doing a little bit of rearranging.
Volume = surface area X height.
Let's say you have the volume is 20 and the surface area is 5 so if we substitute these values into the formula.
Volume = surface area X height.
20 = 5 X height
So divide both sides by 5.
(20) / 5 = (5 X height) / 5
20 divided by 5 is 4. And on the right hand side times by 5 and dividing by 5 cancel each other out, leaving us with height on it's own.
4 = height

[@ascex9458]

Or area of cylinder = 2 pi r (r+h) ,, in this example the result is 1734.159145 cm 2

[@ciciwangg_9937]

this vid helped me a lot bc my mum she explained in a HARD way

[@fuseschool]

Glad this video helped!

[@mapofsoul7584]

The way he said “h” though

[@rrr-sp8ix]

thanks for the help my name is rolando torres

[@rrr-sp8ix]

Rolando Torres

[@d.l9493]

@@rrr-sp8ix i know Its been two years so you might not answer me, but why would you say your name?

[@AstaFolfGaming]

this dudes accent is very unique!

[@Rvdback09]

useful vid cronem

[@trishna9648]

I’m only in yr 8

[@TemporaryBomb]

What about just the net

[@sandeepdixit651]

Nice bro keep going
👍👍👍👍

[@fuseschool]

Thanks ✌️

[@df7201]

Ta

[@tylerwood401]

Who is using this for revision but doesn't understand anything?

[@domingoesteban9498]

Tyler Wood mee 😭

[@pierellzervoulakus2235]

how dd he get 113.097????

[@fuseschool]

+Pierell Zervoulakus which part are you unsure on? are you happy that it is pi X 36?

[@Lakersfan122410]

He multiplied 6x6 to get 36xpie to get 113.097

[@rheasayson]

but the result is 13.04?what gives?

[@vanessaclagnan1817]

Formula is 2 pi r^2 + 2 pi r h
as d = 2r...

[@abcdef1266]

make it in hindi for kids learning.

[@himanshisheoran8899]

Dear sir in physics,,if symbol of weight,watt and work is W and symbol of pressure and power is P how can we differ them?? Plz plz plz plz answer it
ONLY YOU ARE ONE WHO CAN ANSWER IT ❤❤

[@fuseschool]

You are right, the symbol for weight and work is W, but they are measured in different units: weight in newtons (N) and work in joules (J). Watt (W), on the other hand, is a unit of power (P). And even though pressure and power have the same symbol P, they are measured in different units: pressure in pascals (Pa) and power in watts (W). So make sure you check the units correctly, so you don't get confused between the terminology 😉

[@itsnicole3736]

How did he get 1730 cm2? What did he did there?

[@mariasjoerdsma8355]

Happy really late pi day

[@randomgirl7401]

CHECK MATH ANTICS trust me rob will get yah goin

[@randomgirl7401]

and plz subscribe to my channel it will help me a lot ,:)

[@Binkapie71]

When I add the 3 numbers I get 1734.154. I fail to see how he rounded this to 1730. Thoughts?

[@fuseschool]

If you don't round anything at any point, the answer is 1734.159144...
So any differences in the decimal places is just because you may have rounded earlier.
At the end, the teacher rounds their answer of 1734.16 to 3 significant figures, which gives 1730. Are you happy with how significant figures works? 3 significant figures means 3 numbers and then replace the 4th with a 0. Hence 1734 rounds down to 1730. Let me know if you still aren't sure!

[@KuldipSingh-dg5qp]

Not good

[@nodrek4986]

i use calculator pi x 3.14 = 113.04 ??

[@fuseschool]

Because 3.14 is a rounded version of pi, it means your answer of 113.04 is a little different to using the pi button on a calculator - which gives 113.097335529.
Pi is 3.1415926535... and these decimal places carry on, so using 3.14 just makes it a little less accurate. If you are calculating it yourself, you may want to consider using 3.1415 instead of just 3.14 to make it more accurate.
I hope that helps!!

[@singhamaninder5836]

My pi Was 22/7 and my answer was different!

[@fuseschool]

Using pi as 22/7 is an approximation, so it will make your answer slightly different.
22/7 is 3.142857143 whereas pi is actually 3.14159265359. That should explain any slight differences.

[@singhamaninder5836]

I used another formula -
2 π r (r+h)
And my anwer was 9,000 sonething

[@fuseschool]

Did you accidentally use 12 as the radius - rather than 6? 12 is the diameter, so to get 'r' we need to divide it by 2.
Using your formula, you should have 2 X π X 6 (6+40) which gives 1734.

[@singhamaninder5836]

Oooo! I accidentally wrote the equation wrong!!!! I wrote 6 but the whole equation was wrong!!

[@nogo]

h

[@scratchye3347]

N E T

[@mohammedalhamed6453]

الي ياي من صوب استاذ حسين لايك

[@splicix6226]

Wait, whats a rectangle!?!

[@zeyadrashwan4918]

a 2d shape

[@livd4841]

(╬☉д⊙)⊰⊹ฺ

[@huxtonsmith7026]

is this mr dunfy

[@yousufmohammad2494]

Who else is here cuz of online school?

[@gamingjhurawat601]

Bhai hindi nahi aati kya

[@Jesseminecrafter]

Nice, this helped me a lot. ;)

[@godzillafan6704]

Thank u sir

[@fuseschool]

Welcome!