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October 21, 2025, 05:29:15 pm

Author Topic: Half full cone  (Read 1879 times)  Share 

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naomizz

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Half full cone
« on: November 05, 2011, 01:05:32 pm »
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hey guys, just want to make sure. if a question says a cone is half full, does it mean the cone is filled to half of its actual height or does it mean the cone is filled until half of its volume is reached?

DannyN

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Re: Half full cone
« Reply #1 on: November 05, 2011, 01:28:47 pm »
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half of the volume is reached
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geoff_821

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Re: Half full cone
« Reply #2 on: November 05, 2011, 01:54:40 pm »
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Good question, I might chuck this in my bound book.

iroflmfao

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Re: Half full cone
« Reply #3 on: November 05, 2011, 02:19:13 pm »
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If the cone is half full im pretty sure its mean it height..

geoff_821

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Re: Half full cone
« Reply #4 on: November 05, 2011, 02:42:44 pm »
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If the cone is half full im pretty sure its mean it height..

nah I dont think it is

DannyN

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Re: Half full cone
« Reply #5 on: November 05, 2011, 05:56:31 pm »
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If the cone is half full im pretty sure its mean it height..

nah I dont think it is
no... i've done enough of these types of questions to know. it's half of the volume
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geoff_821

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Re: Half full cone
« Reply #6 on: November 05, 2011, 07:01:45 pm »
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If the cone is half full im pretty sure its mean it height..

nah I dont think it is
no... i've done enough of these types of questions to know. it's half of the volume

are u agreeing with me? because i think it's half the volume

Dominatorrr

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Re: Half full cone
« Reply #7 on: November 05, 2011, 07:11:48 pm »
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Uhh what, I'm pretty sure it's height but some others think otherwise. Why would they give you half the volume? The reason why they give you half the height is so that you can use the 1:2 ratio as your length scale factor for certain questions that require it, I've done some of these questions and I'm quite sure it's height not volume.

DannyN

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Re: Half full cone
« Reply #8 on: November 05, 2011, 08:16:20 pm »
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If the cone is half full im pretty sure its mean it height..

nah I dont think it is
no... i've done enough of these types of questions to know. it's half of the volume

are u agreeing with me? because i think it's half the volume
yes im agreeeing
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Natters

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Re: Half full cone
« Reply #9 on: November 05, 2011, 08:46:28 pm »
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i do specialist, and theyre the exact same, it makes no difference whether it's height or volume

iroflmfao

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Re: Half full cone
« Reply #10 on: November 06, 2011, 06:37:20 pm »
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Are you serious.
Of course it makes a big difference if it height or volume of a cone..

If the pointy end of the cone is facing up, half the volume will be less then half the volume of the height.
If the pointy end was the bottom, half the volume would be more then half the volume of the height.

b^3

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Re: Half full cone
« Reply #11 on: November 06, 2011, 06:43:40 pm »
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For a shape with a constant cross-sectional area it won't make a difference wether it's half the volume or height (given you are on the correct axis). For a cone, the cross sectional area is not constant, so we have to take it as half the volume.
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Natters

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Re: Half full cone
« Reply #12 on: November 06, 2011, 07:09:58 pm »
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Quote
Are you serious.
no :D
surely you could tell, nobody starts a serious sentence with "i do specialist"

rzak

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Re: Half full cone
« Reply #13 on: November 06, 2011, 07:53:55 pm »
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Uhh what, I'm pretty sure it's height but some others think otherwise. Why would they give you half the volume? The reason why they give you half the height is so that you can use the 1:2 ratio as your length scale factor for certain questions that require it, I've done some of these questions and I'm quite sure it's height not volume.

you can get the scale factor from volume too... just cube root it