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GRE Prep Club Team Member
Joined: 20 Feb 2017
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A cylinder has a radius of 2 feet and a height of 5 feet. If
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01 Jan 2020, 23:56
01 Jan 2020, 23:56
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A cylinder has a radius of 2 feet and a height of 5 feet. If it is already 40% filled with a liquid, how many more cubic feet of liquid must be added to completely fill it?
(A) \(6\pi\)
(B) \(8\pi\)
(C) \(10\pi\)
(D) \(12\pi\)
(E) \(16\pi\)
(A) \(6\pi\)
(B) \(8\pi\)
(C) \(10\pi\)
(D) \(12\pi\)
(E) \(16\pi\)
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Re: A cylinder has a radius of 2 feet and a height of 5 feet. If
[#permalink]
02 Jan 2020, 07:48
02 Jan 2020, 07:48
As the cylinder is filled 40%, so 60% is empty. In order to fill the cylinder completely we need to add 60% of the volume of the cylinder equivalent of water. \(\pi\)r^2 * h
r = 2ft, h=5ft
So, Water to be added = 60% of Volume of cylinder = 60% of \(\pi\)r^2 * h = (60/100) * \(\pi\)2^2 * 5 = 0.6 * 20 \(\pi\) = \(12\pi\)
So, answer will be D
Hope it helps!
r = 2ft, h=5ft
So, Water to be added = 60% of Volume of cylinder = 60% of \(\pi\)r^2 * h = (60/100) * \(\pi\)2^2 * 5 = 0.6 * 20 \(\pi\) = \(12\pi\)
So, answer will be D
Hope it helps!
gmatclubot
Re: A cylinder has a radius of 2 feet and a height of 5 feet. If [#permalink]
02 Jan 2020, 07:48
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