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Find area elements

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Here's a parameterization of a cylinder, for

0 < θ < 2 π

:

\vec{v} (θ, z) = (r \cos ? (θ), r \sin ? (θ), z)

What is the outward-pointing vector normal to the area element of this cylinder given $r = 5$ ?, $θ = \frac{3 π}{2}$ ?, and $z = 1$ ??

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