GMAT Quantitative Reasoning Practice Test 2

Question : 43 of 100

Marks: +1, -0

If the radius of a cylinder is doubled and so is the height, what is the new volume of the cylinder divided by the old one?

Solution:

The volume of a cylinder is

(π r^2) ×

(height of cylinder). The new volume is

4 × 2=8

bigger.

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