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sean.hilscher
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Post subject: Cylinder Volume  Posted: Mon Sep 05, 2011 7:28 pm |
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A closed cylindraical tank contains 36pi cubic feet of water and is filled to half its capacity. When the tank is placed upright on its , the height of the water in the tank is 2 feet. When the tank is placed on its side on level ground, what is the height, in feet, of the surface of the water above the ground?
A. 2
B. 3
C. 4
D. 6
E. 9
When I worked on this problem I recognized right away that they were looking for the radius. I set up the following equation
36 = pi (r squared) x Height
I designated the height as 2, but the Strat Guide says its 4. Why?
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mithunsam
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Post subject: Re: Cylinder Volume Posted: Mon Sep 05, 2011 7:52 pm |
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You said this question is from Strategic guide, right? Please post the question in the correct section.
Final height should be 3 (radius). I would answer once you moved the question to correct section.
Last edited by mithunsam on Tue Sep 06, 2011 3:17 pm, edited 1 time in total.
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JohnHarris
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Post subject: Re: Cylinder Volume Posted: Tue Sep 06, 2011 12:26 pm |
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sean.hilscher wrote: ...I designated the height as 2, but the Strat Guide says its 4. Why? A closed cylindraical tank contains 36pi cubic feet of water and is filled to half its capacity.
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tim
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Post subject: Re: Cylinder Volume Posted: Tue Oct 04, 2011 12:43 am |
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| ManhattanGMAT Staff |
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Posts: 2242
Location: Southwest Airlines, seat 21C
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Thanks John..
_________________
Tim Sanders
Manhattan GMAT Instructor
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michaelredstone
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Post subject: Re: Cylinder Volume Posted: Sun Feb 19, 2012 12:50 pm |
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I am pretty sure that this Official Guide 12th Edition question (q5, pg. 20) is erroneous. I believe that it ought to read "the height of the water in the tank is 4 feet" (i.e., not 2). Ironically, it appears that earlier printings of this book stated the problem correctly, but that some confusion regarding the question led the publisher to change it to the current incorrect form. See errata details at http://media.wiley.com/product_ancillary/48/04704497/DOWNLOAD/Errata.pdf). Can anyone else confirm this error?
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tim
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Post subject: Re: Cylinder Volume Posted: Sun Feb 26, 2012 3:53 am |
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Location: Southwest Airlines, seat 21C
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i can confirm that some versions of the book are in error..
_________________
Tim Sanders
Manhattan GMAT Instructor
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amit28rock
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Post subject: Re: Cylinder Volume Posted: Thu Mar 01, 2012 9:14 am |
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Ya there are some errors in the official guide but its not totally wrong or contain errors n all its parts..and because of these errors we faces many kind of problems . ______________________________ Formula for the Volume of a Sphere
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jnelson0612
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Post subject: Re: Cylinder Volume Posted: Sat Mar 03, 2012 11:04 pm |
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