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Do we have to study * Solids like Pyramids, Cones, Spheres

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Do we have to study * Solids like Pyramids, Cones, Spheres [#permalink]

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New post 12 Sep 2008, 23:04
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Do we have to study

* Solids like Pyramids, Cones, Spheres etc... ?
* Number Systems like Binary, Octal etc. ?

Can we blindly follow the list of topics mentioned in OG 11 on Page 107 ?

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Re: What NOT to study for GMAT ? [#permalink]

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New post 13 Sep 2008, 08:08
one month ago i did the test there wasnt a single 3D figure problem, which is a bad actually cuz this is a rather easy topic - easy marks

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Re: What NOT to study for GMAT ? [#permalink]

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New post 13 Sep 2008, 11:35
You won't need any formulas for the volumes of 3-d shapes like cones, pyramids or spheres. You should know, however, that if you take a 2-dimensional shape and 'stretch it out' vertically, the volume is just the area of the base times the height. So, a cylinder's volume is just (Pi*r^2)*h, and the volume of a box with dimensions l by w by h is just (l*w)*h.

I suppose it's possible that you could see a GMAT question about binary notation, though it seems unlikely. It is not a topic you are supposed to know anything about for the test, so if there ever was such a GMAT question, the question itself would need to explain what binary notation means- you would not need to have studied binary in advance.
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Re: What NOT to study for GMAT ? [#permalink]

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New post 14 Sep 2008, 11:07
IanStewart wrote:
You won't need any formulas for the volumes of 3-d shapes like cones, pyramids or spheres. You should know, however, that if you take a 2-dimensional shape and 'stretch it out' vertically, the volume is just the area of the base times the height. So, a cylinder's volume is just (Pi*r^2)*h, and the volume of a box with dimensions l by w by h is just (l*w)*h.

I suppose it's possible that you could see a GMAT question about binary notation, though it seems unlikely. It is not a topic you are supposed to know anything about for the test, so if there ever was such a GMAT question, the question itself would need to explain what binary notation means- you would not need to have studied binary in advance.


Thanks Ian. That addresses my concern :)
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Re: What NOT to study for GMAT ? [#permalink]

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New post 08 Nov 2008, 20:47
I had a question on a volume of a cone and its surface area compared to cylinder so YOU NEED TO KNOW VOLUMES OF 3-D objects

IanStewart wrote:
You won't need any formulas for the volumes of 3-d shapes like cones, pyramids or spheres. You should know, however, that if you take a 2-dimensional shape and 'stretch it out' vertically, the volume is just the area of the base times the height. So, a cylinder's volume is just (Pi*r^2)*h, and the volume of a box with dimensions l by w by h is just (l*w)*h.

I suppose it's possible that you could see a GMAT question about binary notation, though it seems unlikely. It is not a topic you are supposed to know anything about for the test, so if there ever was such a GMAT question, the question itself would need to explain what binary notation means- you would not need to have studied binary in advance.

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Re: What NOT to study for GMAT ?   [#permalink] 08 Nov 2008, 20:47
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Do we have to study * Solids like Pyramids, Cones, Spheres

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