How to Calculate the Surface Area of a Cylinder.

[@phoebea]

I have friends opting to homeschool their kids, and I've recommended your channel as a resource for the maths part of the curriculum. You have great videos for parents who need to brush up on maths. Thanks!

[@tecmath]

Thanks and I'm glad it helped.

[@julians9070]

I agree with Phoebe404.

[@glue8147]

Tecmath you gonna upload

[@julians9070]

Delighted with this refresher, Thank you Josh.

[@inhannity46]

hello, you videos have helped me so much, any chance you could do a video on vectors? thanks.

[@htetminaung9863]

Thank you 😃

[@jaymorgan.]

Usually your explanation is easy to understand but I’m still lost on this one. Lol

[@francescaberti4287]

Thank you life saver

[@TheDeathKami]

πR² for 1 circle (π3²)
So 2πr² for the 2 circles (the top one and the one at the base)
Then just unroll the cylinder so u have a plane surface looking like a rectangle of 10(it's H) * 2πR
:)

[@tecmath]

Well said.

[@natethegr8230]

My internal dialogue worked it out as pie times diameter which I automatically calculated as 6.
Potaytoe...potahtoe

[@guy-]

Nice. That's pretty good. What about volume of a cylinder?
Edit: wait shouldn't it be 2(πr²)•h
Edit: ChatGPT confirmed that that was indeed the formula

[@MWENDA-vv5im]

You could use:
S.A= 2(пd²)/4 + пdh
Where, d=diameter, п=pie and h=height

[@-JA-]

👍🙂

[@tecmath]

👍

[@bignumbers]

I thought this was going to be one of those tricks where you can do it on your fingers in 3 seconds...

[@tecmath]

One is coming up!

[@murphygreen8484]

τ has entered the chat

[@sivasankar6048]

(Pi x 6m x 10m) + (2 x Pi x r Sq )=

[@willthecat3861]

Learned how to do this in grade 6 or 7. It's so sad that the mental wasteland has expanded so far that there a almost 2000 views of this TH-cam video.

[@MWENDA-vv5im]

What do you mean? This channel mostly looks at very basic mathematics and we love it. If you want complicated stuff look for other channels.

[@SuperYoonHo]

This is too easy sir

[@chrissalter8851]

What 😂