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# Rectangle FCDE has a length of 6 and a width of 2. Two right

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Rectangle FCDE has a length of 6 and a width of 2. Two right [#permalink]  06 Oct 2020, 10:16
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71% (01:04) correct 28% (01:58) wrong based on 14 sessions
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GRE Rectangle FCDE has a length of 6 and a width of 2.png [ 28.07 KiB | Viewed 210 times ]

Rectangle FCDE has a length of 6 and a width of 2. Two right cylinders have been bisected into four identical half-cylinders, which intersect rectangle ABDE as shown. If each of the half-cylinders has the same radius, what is the combined volume of the four half-cylinders?

A. $$6π$$

B. $$9π$$

C. $$12π$$

D. $$18π$$

E. $$21π$$
[Reveal] Spoiler: OA

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Re: Rectangle FCDE has a length of 6 and a width of 2. Two right [#permalink]  06 Oct 2020, 20:39
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KUDOS

height of cylinder =6

volume of four half cylinders=4(π*1*6)/2=12π

option C is correct
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Re: Rectangle FCDE has a length of 6 and a width of 2. Two right   [#permalink] 06 Oct 2020, 20:39
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