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# How many gallons of a chemical can be stored in a cylindrical tank if

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Math Expert
Joined: 02 Sep 2009
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How many gallons of a chemical can be stored in a cylindrical tank if [#permalink]

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22 Oct 2017, 06:51
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Difficulty:

25% (medium)

Question Stats:

100% (00:27) correct 0% (00:00) wrong based on 41 sessions

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How many gallons of a chemical can be stored in a cylindrical tank if the radius of the tank is 15 feet? One gallon is equal to 231 cubic inches.

(1) The height of the tank is 20 feet.
(2) The temperature is 60 degrees Fahrenheit
[Reveal] Spoiler: OA

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Kudos [?]: 135295 [0], given: 12686

Senior Manager
Status: Preparing for GMAT
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Kudos [?]: 133 [3], given: 370

Location: India
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Re: How many gallons of a chemical can be stored in a cylindrical tank if [#permalink]

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22 Oct 2017, 09:56
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How many gallons of a chemical can be stored in a cylindrical tank if the radius of the tank is 15 feet? One gallon is equal to 231 cubic inches.

(1) The height of the tank is 20 feet.
(2) The temperature is 60 degrees Fahrenheit

S1 - height=20ft
Volume of cylindrical tank=$$πr^2h$$
The units can be converted to cu.in from cu.ft. and then to gallon as per conversion rate given.
Sufficient.

S2-Insufficient.

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Re: How many gallons of a chemical can be stored in a cylindrical tank if [#permalink]

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25 Oct 2017, 20:45
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St 1 :, as we got both radius and height. Volume of chemical stored can be found. Sufficient
St2: temperature is irrelevant. So insufficient.

PS:since the question ask for volume temperature of stored chemical is not relevant. If the question had been of mass of chemical stored, then temperature and the density of chemical at the stored temperature would be required to find mass of chemical stored.

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Re: How many gallons of a chemical can be stored in a cylindrical tank if [#permalink]

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26 Oct 2017, 07:00
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Hi frndrobinster

I like your PS, where you have mentioned another angle in which the question can be framed...

Kudos

frndrobinster wrote:
St 1 :, as we got both radius and height. Volume of chemical stored can be found. Sufficient
St2: temperature is irrelevant. So insufficient.

PS:since the question ask for volume temperature of stored chemical is not relevant. If the question had been of mass of chemical stored, then temperature and the density of chemical at the stored temperature would be required to find mass of chemical stored.

Give Kudos, if you like my explanation.

Posted from my mobile device

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Re: How many gallons of a chemical can be stored in a cylindrical tank if   [#permalink] 26 Oct 2017, 07:00
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