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29 Aug 2018, 01:35
Kudos
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C
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Difficulty:
5%
(low)
Question Stats:
87% (00:45) correct
13%
(01:11)
wrong
based on 71
sessions
History
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What is the volume of a given cylinder?
(1) The surface area of the cylinder is 20π.
(2) The height of the cylinder is 5.
(1) The surface area of the cylinder is 20π.
(2) The height of the cylinder is 5.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
29 Aug 2018, 04:16
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Bunuel
Question stem:- What is the volume of a given cylinder?
Volume of cylinder=\(\pi*r^h\)
We require info on r and h.
St1:- The surface area of the cylinder is 20π.
or, \(2*\pi*r(h+r)=20π\)--------(a)
one equation, 2 variables.
Insufficient to determine r and h.
St2:- The height of the cylinder is 5
h=5.---------(b)
The value of 'r' is unknown.
Insufficient.
Combined, we can determine 'r' by substituting h=5 .Subsequently we can determine volume.
Sufficient.
Ans. (C)
26 Aug 2024, 09:01
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