GRE Sample Test 3 Quantitative Reasoning 1

Question : 18 of 20

Marks: +1, -0

If each of the edges of a cube increases by a factor of 2, the surface area of the resulting cube will be how many times the surface area of the original cube?

Validate

Solution:

Surface area of a cube =

6e^2

. Plug in values. Let the original edge = 2. The original surface area is thus 24. The new surface area is thus 96. The new surface area is thus four times the original surface area.

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