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04 Sep 2018, 23:47
Kudos
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B
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Difficulty:
25%
(medium)
Question Stats:
77% (01:06) correct
23%
(01:08)
wrong
based on 33
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If the same amount of tin (in square inches) used to make a cube with edge 3 inches is used to make a cylindrical can, what is the height of the can?
(1) The cube has a height of 3 inches.
(2) The circumference of the can is 2π.
(1) The cube has a height of 3 inches.
(2) The circumference of the can is 2π.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
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05 Sep 2018, 04:59
Kudos
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Bunuel
Given, the same amount of tin (in square inches) used to make a cube with edge 3 inches is used to make a cylindrical can
Implies that surface area of cube with side length 3 inches=Total surface area of cylindrical can
Or, \(6*3^2=2\pi*r(r+h)\)
We require the value of radius of the cylindrical can in order to determine the value of height.
St1:- The cube has a height of 3 inches.
Inn a cube, height=length=breadth=3 inches.
No information on height of cylindrical can.
Insufficient.
St2:- The circumference of the can is 2π.
Radius of the cylindrical can can be determined, 2πr=2π or, r=1
Sufficient.
Ans. (B)
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