If the volume of a cube is x^3 cubic units, what is the number of square units in the surface area of the cube?
A. x^2
B. x^3
C. x^6
D. 6x^2
E. 6x^3
The OA is D.
The highlighted part refer that the answer option must be a square so only options (A) and (D) remains...
Volume = x^3
Side = x
Total Surface area =6x^2. Option D.
Has anyone another approach to solve this PS question? Regards!
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If the volume of a cube is x^3 cubic units, what is the
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Hi swerve,
We're told that the volume of a cube is X^3 cubic units. We're asked for the number of SQUARE units in the SURFACE AREA of the cube. This question can be solved in a couple of different ways, including by TESTing VALUES.
IF... X = 2, then we have a 2x2x2 cube.
Each surface of the cube has an area of 2x2 = 4.
There are 6 surfaces, so the total surface area = (6)(4) = 24
Thus, we're looking for an answer that equals 24 when we use X=2. There's only one answer that matches...
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
We're told that the volume of a cube is X^3 cubic units. We're asked for the number of SQUARE units in the SURFACE AREA of the cube. This question can be solved in a couple of different ways, including by TESTing VALUES.
IF... X = 2, then we have a 2x2x2 cube.
Each surface of the cube has an area of 2x2 = 4.
There are 6 surfaces, so the total surface area = (6)(4) = 24
Thus, we're looking for an answer that equals 24 when we use X=2. There's only one answer that matches...
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
GMAT/MBA Expert
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Jeff@TargetTestPrep
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If the volume of a cube is x^3, then each edge is x. The surface area of one face of the cube is x^2, and since there are 6 faces, the cube's surface area is 6x^2.AAPL wrote:If the volume of a cube is x^3 cubic units, what is the number of square units in the surface area of the cube?
A. x^2
B. x^3
C. x^6
D. 6x^2
E. 6x^3
Answer: D
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