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Cube C has an edge of 4 and cube D has an edge of 5.
[#permalink]
25 Nov 2020, 09:26
25 Nov 2020, 09:26
Expert Reply
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Question Stats:
84% (00:57) correct
15% (00:49) wrong based on 32 sessions
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Cube C has an edge of 4 and cube D has an edge of 5.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
The ratio of cube C’s total surface area to its volume |
The ratio of cube D’s total surface area to its volume |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Re: Cube C has an edge of 4 and cube D has an edge of 5.
[#permalink]
25 Nov 2020, 21:20
25 Nov 2020, 21:20
1
if a be an edge of a cube
then the surface area= 6a^2
and the volume=a^3
therefore, the ratio of surface area and volumn= 6a^2/a^3= 6/a
now, the ratio for the cube having edge 4= 6/4
and the ratio for the cube having edge 5=6/5
since, 6/4>6/5 (A is the answer)
then the surface area= 6a^2
and the volume=a^3
therefore, the ratio of surface area and volumn= 6a^2/a^3= 6/a
now, the ratio for the cube having edge 4= 6/4
and the ratio for the cube having edge 5=6/5
since, 6/4>6/5 (A is the answer)
gmatclubot
Re: Cube C has an edge of 4 and cube D has an edge of 5. [#permalink]
25 Nov 2020, 21:20
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