A bicycle wheel has a diameter 0.71m. How many complete : GMAT Problem Solving (PS)
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# A bicycle wheel has a diameter 0.71m. How many complete

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Manager
Joined: 04 Jan 2013
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A bicycle wheel has a diameter 0.71m. How many complete [#permalink]

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06 Jan 2013, 04:37
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67% (02:02) correct 33% (00:10) wrong based on 21 sessions

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A bicycle wheel has a diameter of 0.71m. How many complete revolutions does it make in 1km?

A. 246
B. 448
C. 1408
D. 710
E. 223
[Reveal] Spoiler: OA

Last edited by Bunuel on 07 Jan 2013, 01:10, edited 1 time in total.
Edited the question.
Manager
Joined: 12 Mar 2012
Posts: 94
Location: India
Concentration: Technology, Strategy
GMAT 1: 710 Q49 V36
GPA: 3.2
WE: Information Technology (Computer Software)
Followers: 9

Kudos [?]: 317 [0], given: 22

Re: A bicycle wheel has a diameter 0.71m.How many complete revol [#permalink]

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06 Jan 2013, 04:43
1 revolution = 3.14 * diameter.
Number of revolutions in 1km = 1000m / ( 3.14 * 0.71m ) = 448.5. Hence 448 complete revolutions.
Re: A bicycle wheel has a diameter 0.71m.How many complete revol   [#permalink] 06 Jan 2013, 04:43
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