Posted by **Tyler** on Wednesday, January 23, 2008 at 6:33am.

A mailing tube is 25" long with a diameter of 4". What is the volume of a similar tube that has a diameter 50% larger than the original tube?

So, the new tubes diameter would be 6. So to figure the volume do i take 3.14 *36 or??

- Geometry -
**drwls**, Wednesday, January 23, 2008 at 7:07am
Yes, the new tube's base area is 36 pi. The question is, what happens to the length? When they say the tubes are "similar", that should mean that the length also increases 50%, to 37.5 inches. But perhaps they mean for the length to stay the same. The problem should have been more clearly worded.

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