Question: Isolating Components of a Cylindical type Vector


What is the simplist Maple code needed to isolate a vector that has two components?  See below:

Vector[column](2, [25.00000000*pi*r/(r^2 + z^2), 25.00000000*pi*z/(r^2 + z^2)])

I want to get the magnitude of this vector which is simply the square root of the sum of the squares of the individual components as shown above.

How do I do that?


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