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What is the volume of air inside empty rectangular cuboid?

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Joined: 04 Mar 2012
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What is the volume of air inside empty rectangular cuboid?  [#permalink]

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New post 15 Apr 2012, 20:55
3
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

40% (01:23) correct 60% (01:12) wrong based on 96 sessions

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What is the volume of air inside empty rectangular cuboid?

(1) Areas of two surfaces of the rectangular cuboid are 10 and 25.
(2) Length of one of the sides is 5 units.
Manager
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Joined: 13 Mar 2012
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Concentration: Operations, Strategy
Re: Volume of rectangular cuboid  [#permalink]

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New post 15 Apr 2012, 23:50
3
gmihir wrote:
What is the volume of air inside empty rectangular cuboid?

1. Areas of two surfaces of the rectangular cuboid are 10 and 25.
2. Length of one of the sides is 5 units.


let the sides be l,b,h we need unique v= lbh

now
statement 1:
any combination may give the result i.e. areas 10 and 25 no unique info

INSUFFICIENT

statement 2:
only one side known rest two are unknown

INSUFFICIENT

1) and 2):

one of the side is 5 ; other may be 2, 12.5
one is 5 other may be 5, 2
hence its not unique

INSUFFICIENT

Hence E

Hope this helps..!!
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Re: What is the volume of air inside empty rectangular cuboid?  [#permalink]

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New post 11 Oct 2018, 03:37
Statement 1: Areas of the two faces of the rectangular cuboid are 10 and 25. Only from this we can't determine the volume of the cuboid.

Not sufficient.

Statement 2: One of the dimension of the rectangular cuboid is 5 units. But we don't know about the other two dimensions.

Not sufficient.


1 & 2 Together: Different combinations are possible as any of the 3 dimensions (length, breadth, width) may be equal to 5 units. This will result in different volume.

Not sufficient.
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Re: What is the volume of air inside empty rectangular cuboid?   [#permalink] 11 Oct 2018, 03:37
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What is the volume of air inside empty rectangular cuboid?

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