Surface Area and Volume of a Sphere - YourTeacher.com

[7CrimsonKnights]

XP I HATE STINKING MATH!!!! I DONT GET IT!!!!!

[7CrimsonKnights]

How do i find the surface area of a sphere in terms of pi?

[flyingmojo5]

This pathetic excuse for a teacher embodies the reason why schools devour the natural, inborn curiosity of children and gut all the fun out of learning. After 1 minute of listening to her vapid droning, I would rather shoot myself than continue.

[auraavail]

What's the volume of my dick?

[iichigokisu]

the awkward smile at the end...

[spottedoctopus274]

:O I get it ! Thank you so much

[MirageScience]

but how do you know the area is 4 pi r squared

and the volume is (4/3) pi r cubed?

cheaters.... do some calculus

[xblueblaze]

Imagine how awkward going on a date with her would be. Not that you'd want to XD

[xblueblaze]

she looks like someone's pointing a gun at her behind the camera.

[BitchSlapperable]

it makes sense but there are shorter and more basic ways to do this, i mean seriously wtf?

[tusharrable]

ROBOTIC VOICE

[FellowFOTT11]

holy shit..theres a MUUCH easier/faster way to do this...wtf is this lady smoking?!

[sebastiaoxxx]

she is amazing, her voice is just fine people like jesseFed may consider to shut the hell up and live in his or her own stupidity

[Carlos64073]

People!!! it´s not a joke!!! No wonder you don´t learn anything !!!

[xJenna98]

she sounds like a robot O.o

[sindell29]

Her voice is so annoying and boring how am I supposed to get into 7th grade if I can't stay awake!!!

[JesseFed96]

i think shes a prostitute...

[xShyxGirlxSujinax]

it was helpful..^^ pie

[marleeashton]

Is this the part where I cry and run out of class because I feel that my question wasn't answered at all. yeah.

[TheRavingSexyBoy]

Silly, pies are round not square.

[DumberEveryTime]

That chick's expression at 4:58 = golden.

[Pra5286]

oh baby, say pie one more time.

[slait100]

she is sayin pie r cute

[MikeCOYS18]

Thanks! Helped a lot! Well, your voice and tone didn't help but your method did.

I can find a robot that talks more lively than you... tut tut...

[arich357]

I love the retarded looking pose she does at the end lol!

[LooLooLooeny]

@arich357 lol. She sounds retarded all together.

[eletrizity23]

Math=?

[ino3d]

i hope, that your voice is good, try learn about Sphere instead of voice lesson! gay

[SophPierceLasc]

her voice irritates me in a bad way...

[TheHitorii]

spear....... lol!

[tiger12300]

i have a test tomorrow i dont get geomerty :(((

[wagnd4e]

penis



[randomacountboy]

isnt that first equasion used to find the surface area?

[gcaban123]

lol her voice i love pie

[arsenalfuller]

as soon as she said factor tree i gave up XD

as if it werent baffling enough

[arsenalfuller]

lol



[tawny41]

Your a virgin.

[BeccaMobile95]

STFU!!!

[donsalta1441]

This one is very easy. Please upload a more complicated one! :) Thank you.

[rocketqueen501]

its so easy... :D

[Jetlagandgaming]

the "r cubed" bit isn't a term; it's a factor. Terms are connected by the operators + and -. None of your operands there are connected by such operators; therefore, no terms.

[cjlovesnaruto]

i like pie

[INTENSAFIRES]

well she knows the answer so break it down damn nobody understands

[brokenboardsmedia]

man all i kept thinking about was pie



[TheRawr75]

Nerds and their cone tits -_-

[NickTheCola]

Um... 288π/2=144π. Am I the only who noticed this? :D

[Mikedduarte]

@NickTheCola Its a coincidence. Try calculate it for r=3.

[brokenboardsmedia]

@NickTheCola nope hahha my friend pointed it out too me also

[paki9797]

she is so mother fucking confusing...what i knew earlier is also forgotten

[paki9797]

she is so mother fucking confusing...what i knew earlier is also forgotten

[TheGooberment]

i didnt understand anything

[yinney12]

What the Heck?? And I say my teacher makes things difficult...Hey Teach!! I don't understand...-_-

[n0rion7]

or you can use a calculator..

[ojimex]

its still fuckin confusing

[bsangoz]

lol shes so funny when she stares at the camera

[kevinroxursocks]

awesome video thanks very mathmatical. pie is approximately 3.14

[bigmack1626]

mmmmmmm.. pie :P

[sacrymovie]

shes the daughter of optimus prime :3

[strikefreedomx20a]

I understand how to do this but the step are to dam long of getting the r.

[MyShukhrat]

She is wonderful teacher! The problem is really complicated. I don't really understand, but I like it.

[compgrad1]

Good teacher! Clear, concise, to the point.

[Mentorcase]

She gives great whiteboard.

[Mentorcase]

yea and 288 pi / 2 = 144 pi

[1loby]

Gosh. Her voice is so boring. I like the other guy better.

[yum484]

she sounds like a robot. o.o 

[lakeheadca]

I think she is very nice, speaking clearly, and explaining in detail. I really like her voice, she sound like a teacher.

[bodibordaj]

she is retard

[100yuki001]

She writes pretty, but talks like a robot.

I think google would have helped me more with this.

[Tigereyeftw]

she fails

[S1AN013]

She didnt leave it in terms of pi ?

[greasy220]

@S1AN013 are you stupid? did you even watch the video? her answer was 144pi.... which is in terms of pi...

[jamesfelix303]

She didnt mention one time in the video about surface area. She talked about finding the area out of the volume of sphere, and thats it. What the fuck!?

[NeverEndingPromises]

I love her hand-writing :O

[GamingFreak00]

It's not her fault, she was probably told to be as clear and non-energetic as possible or they wouldn't have released the video to public. Give the lady a break and pay attention.

[DEO541]

Math is so Stupid she went from 288 to 864 to 216 ETFGH < LOLz yes this is easy hard stuff Great Video tho.

[Spyxdragon]

she sounds emo but she does have good handwriting

[nasdin94]

Spear! HAHA

[SarinneMusic]

She says SPHERE funny. :DD

[OrangeForestXD]

i want her to not speak anymore, no one should ever talk like that for 5 minutes..

[soiierre]

Instead of being thankful you guys criticize her. way to keep it classy guys.

[CosmicTheWindMaster]

It's funny how she just pauses in the beggining waiting for whta the cards say

[gangsterali100]

omg this is way to hard -.-

[lilshawt3e23]

i dont get it

[Rudeboyenosh]

@lilshawt3e23 innit

[WhatYouLookinAtXD]

this chick is a fuckin downey

[lilshawt3e23]

hahahahahha lol! agreed

[shooterman13]

theres a guy infront of the camera with cards telling her the answer obviously... lol

[TheRevSoldier]

1 step= divide 2

[TimJSwan89]

She's just teaching predetermined sphere formulas and algebra.

[fanofwrestling123]

How would I do this problem: A baseball with circumference 23.5cm?

[AzeezAbubakr]

Its not wrong aubriedun, 144pi is 452.16... their both correct. its the same thing.

She ended it in the form of 'pi' because her question said so :)

[aubriedun]

The answer at the end is not correct... the formula is 4pir square... so it shud be 4*3.14*(6)2--- and the answer wud be 452.16 not 144 pi dats wrng

[tyler121515]

You can't find the "area of the sphere". What you are finding is the SURFACE area.

[serenitymhm]

'Volume of a Sphere' Might i add..

[Jalfypie]

LOL at the end 4:50

could be a trailer for the next big horror film

[AxlRoseHippie]

wow... im canadian so this did NOT help lmfao

[clixsyt]

How the hell do you get such good handwriting?

[TotalWarLord]

no help

[Jesant045]

waa.... pi is suppose to be equal to 3.14 =_=

[respekdis]

yes Pi = 3.14 because it rounds down from 3.141592654 it is the easiest way to dtermine the areas and volumes of different 3D shapes

BTW im in grade 9 and this is soooo easy

[26442941]

she talks like a robot, shes helpful though

[respekdis]

ya i know its kind of creepy

[rawheatley]

Thank you for doing this. This is very helpful.

[stevema2]

nice...now i want to know the diameter of your hole so i can fit in my rod of ever increasing radius and length lmao :p

[Kei0bou0BLazE]

LOL WTH MAN XD

[msonic98]

can someone explain how to get volume in a simple way instead of a robotic way im only a 6th grader

[fireflymustdie]

its easy just take 288 divided by 4over3 which equals 216.then take 216 and squareroot 216 by 3which give 6, the radius . After that you get 6 you square it and you will get 36 then you times 4 and your ans would be 144

[cattrax320]

bullshit ,,,terrible

[hazeleyesmrk]

I LOVE THIS IT HELPED ME SOOO MUCH

[onemothafucka]

YOU MAKE MY WORLD HORRIBLE WITH UR DAM MONOTONE

f math

[MetalSwitch95]

Anyone else notice the area is exactly half the volume?

[TheFutureIsRightHere]

couldn't she plug the 288 to the A=4pir^ ?

[1pitbullz1]

nvm i figured it out

[your2babies]

This is great Thanks

[meljohn2202]

And btw whats up with all the complicated shit why you doing equations just to find the fucking volume of a sphere come on now. otherwises thank you xD

[finessecrazy4]

you helped a ton thanks!

[xxpixildustxx]

o.o

so/freaking/confusing.

SPEAK ENGLISH NOT MATH.

this is why im failing.....becuz all the math teachers speak foreign languages of wich i do not comprehend....

[msonic98]

same here i thought she was a bot for a second! lol

[jumel111]

shes need to speak english :|

[JonasRulz77]

ok i need help on Triangular Prisims MAKE A VIDEO ON THAT!!!!

[Yu2Kal]

Triangular Prisms are really easy, just remember the formula, Volume = Area of cross the section*The length, you can find the area of a triangle by using 1/2*base*height, or 1/2*a*b*SinC, then multiply by the 3rd dimension.

[mattwong8]

she has good writing.

[Dhaval1029]

wtff???

i dont get it

[hrspwr69fstbck]

so you divide volume by 2 to get your answer for area. I think I get it now.

288/ 2 = 144 :D

[bronxwiz]

lmao

[0TheLig0]

I will never eat pie again after this!

O.o

[hsoj5665]

id do her

[silentsaito]

that was a lot of pi, i need a snack.

[aesops09099]

lol

[anunakii]

is it just a coincidence that the volume of the sphere is 288pi and the area of the same sphere is mearly (1/2)288pi?

[FoulShot]

Yes it is.

For you see, since it's radius is 6, the volume can be written as 6^3(4/3)(pi) -> 6^2(4/3)(pi)(6)->6^2(4)(pi). At the same time, the surface area of the sphere can be written as 4(pi)(6^2).

It is merely because the radius's fractional ration with the term 4/3 is 2, thus one is double of the other. This does not occur in all spheres.

[OHMYGODINEVERSAWTHAT]

thanx no i know how to sell balls by finding their areas and now i can sell them thanx :D

[yestyle]

How to get 6 in scientific calculator? Our mind is not made up of machine/robot/computer to solve.

Every college or high-school student brings scientific student except the basic math lesson because it requires. Scientific calculator is not cheating while doing homework and test examination. I really don't get it from her and I need a real proof.

[brightscience]

she is so hot. i would do her right now. oh baby

[NarutoRule2326]

...wtf? she sounds like a robot...

[havikyru]

@NarutoRule2326 thats what happen when you learn too much math think...

[Rudeboyenosh]

@NarutoRule2326 ikr....

[brokenboardsmedia]

@NarutoRule2326 omg thats what i was just thinking hahaha

[Ilawa]

Very clear and great explanation. Thanks!

[keeshankoote]

i hate math its so hard to remember

[whatsit777]

First of all, volume and area always need to be measured in units. I.e., the volume should be cubic units and the area should be in square units. Secondly, the sphere is not flat--the area that you are finding is Surface Area.

[WeiChiehC0323]

hm...useful

[funky523]

she sounds lyk a robot :|

[WeiChiehC0323]

lol

[DylanEfron19]

lol she does that make me laugh

[NarutoRule2326]

omg...someone agrees with me!

[atleast1try]

im 73 and i don't get it

[ryanman555]

How is that..?Try growing up sometime.

[NarutoRule2326]

LOOOZL

[CooolKIdzZ]

wow.. her handwriting was so neat!

[NarutoRule2326]

exactly!!

[tenzin012]

how to find radius of sphere

[Defuf]

to be honest .... she should have the drawing of the spear and show and radius in the spear and the diameter if not i even get confused and am in highschool :| math isnt my thing its a strugle

[mtdgurl07]

You will get it when you get older

[Seergio15]

Gosh I really need help on geometry my exam is on friday :(

[DeidaraR0X]

okay i'm only like eleven so this is all confusing.

[DaisytheDrawer]

im 12...goin 2 be 13

[alexross8]

this is good but i only need area of sphere.