Volume: how to measure it | Measurement | Pre-Algebra | Khan Academy

Volume is a measurement in the 3rd dimension. This means that it not only has width and height, but it has depth as well. Let's watch this video in which we get a great explanation of how we measure volume.

Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

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[tyneury]

Khan Academy really is a blessing. Teachers like Mr. Rob that can communicate a subject like math better than any teacher I've ever had..man...

And it's absolutely free? What did we do to deserve KA? ❤

Mr. Rob is the reason I'm passing my college math class right now, so, thank you.

[insanely-weirdstudios]

Explanation of the video (in my own brain): 1d is just a line, so all you have to do to measure 1d is measure the length of it to get the answer. 2d and 3d, however, both have formulas to get the answer. For 2d, the formula is LxW (length times width, can use base as length too). For 3d, the formula is a little more complicated. Its formula is LxWxH (length times width times height, again, you can use base as length). Don't switch anything up or with anything for the formulas. You do the formulas, you get the answer. Hope this helps and is a good explanation!

[eyeknowwhereyoulive]

this is the only math video i have ever seen that i actually understand and that was not boring thank you for not making 7:50 minutes of my school math time!!! :)

[TheOfficialGuineaPigOfYoutube]

You teach better than my math teacher tbh

[nonokhumalo]

Better then my real teacher explaining

[abhishekpandey]

7:40 when he make dots on the cube drawing it was looking like cuboidal epithilial tissue

[jamilahassan]

the best explaination ive ever seen thanks you mr good job :)

[ilhamanamazova]

thanks for teaching though i always watch your videos for math

[bunnyli]

i love drawing but hate math, this person makes math fun for me. his voice has expression and not a boring voice my teacher used

[sandeshchhetri]

helpful but i fell asleep halfway through. XD

[asadullahm]

It's so great sir please send videos sir

[heereswhoever]

According to M-theory there are 11 dimensions at least. I think there is a 0th dimension: energy. 4d = time. I think we live in the 4th dimension.

[infinitesimotel]

Well someone has to, even if it is me. But I was referencing spinal tap video, volue, it goes to 11, Im just bad at puns. I accept my punishment. But what you said was quite interesting.

[silentwolves]

Ok I’ve looked all over YouTube and I can’t find a single video that helps me understand this. SOMEONE PLEASE HELP ME!

[abhishekpandey]

CAN SOMEBODY HELP ME OUT WITH A HUMBLE REQUESTTO ALL

[Dyshtx]

This guy teaches better than my teacher

[beckmorales]

My star exam is next week and math is my worst subject and I never understand stand it but how can I vid that not even an hour help me more then a teacher

[rosemalfoy]

I see this at my school and it valor the new school the loins this help me all lot like for real i dot know math but now i do like 378×100=37.800

[georgiafowler]

I'm not sure if I really get this could someone help me out?😁😁

[tejolson]

Oh, ok. I was doing something with triangular numbers and area, then I moved up to tetrahedral numbers with volume. I kept going further up with Figurate Numbers and it started looking like that method for measuring pi, except the first answer would have to be 1. I can't remember what I did, but the question still stuck in my head.