SOLUTION: The radius of a cylinder is increased by 40%, but the height is cut in half. What is the percent change in the volume of the cylinder?

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Question 1180620: The radius of a cylinder is increased by 40%, but the
height is cut in half. What is the percent change in
the volume of the cylinder?

Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!


The description, for the new volume,


mostly simple algebra from there

Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
.

The ratio of the new volume to the original volume is   = 0.98.


So we have decrease of the volume by 2%.


Solved, answered and explained.



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