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A room is 15 meters long, 12 meters wide & 10 meters in heig

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A room is 15 meters long, 12 meters wide & 10 meters in heig  [#permalink]

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New post Updated on: 20 Aug 2014, 02:12
2
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

80% (01:51) correct 20% (02:23) wrong based on 83 sessions

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A room is 15 meters long, 12 meters wide & 10 meters in height. The longest possible rod which can be placed in the room is

A: 19.13 meters

B: 20.22 meters

C: 21.65 meters

D: 22.34 meters

E: 23.32 meters

Source: CMAT Preparation

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Originally posted by PareshGmat on 20 Aug 2014, 01:00.
Last edited by PareshGmat on 20 Aug 2014, 02:12, edited 1 time in total.
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Re: A room is 15 meters long, 12 meters wide & 10 meters in heig  [#permalink]

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New post 20 Aug 2014, 01:51
1
PareshGmat wrote:
A room is 15 meters long, 12 meters wide & 10 meters in height. The longest possible rod which can be placed in the room is

A: 19.13 meters

B: 20.22 meters

C: 21.65 meters

D: 22.34 meters

E: 23.32 meters

Source: CMAT Preparation

Square root of 15^2+12^2+10^2...(Diognal) which is square root of 469 that lies 21<√469<22. Hence the answer should be C
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Re: A room is 15 meters long, 12 meters wide & 10 meters in heig  [#permalink]

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New post 17 Sep 2018, 07:18
The longest possible rod is the diagonal of the cuboid which is given by (a^2+b^2+c^2)^0.5. This gives the answer 21.65 option c
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Re: A room is 15 meters long, 12 meters wide & 10 meters in heig   [#permalink] 17 Sep 2018, 07:18
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A room is 15 meters long, 12 meters wide & 10 meters in heig

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