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January 30, 2015

January 30, 2015

Posted by **how do i start working on this problem** on Friday, April 6, 2012 at 2:38pm.

The volume of the second cylindrical pipe is how many times greater than the volume of the first cylindrical pipe?

A.3

B.4

C.5

D.8

- Geometry -
**Steve**, Friday, April 6, 2012 at 2:52pmsince C=2pi*r, the radius of the 2nd pipe is 20π/2π = 10

so, the 2nd pipe has radius twice the 1st pipe.

If linear dimensions scale by n,

area scales by n^2

volume scales by n^3

So, now you have what you need.

- Geometry -
**Anonymous**, Thursday, June 7, 2012 at 2:21pm8

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