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## Homework Statement

What is the mass moment of inertia about the y-axis of the object shown if the density is 4 slugs/ft3?

## Homework Equations

[itex] I_y = \int (x^2 + z^2) dm [/itex]

[itex] dm = \rho dV [/itex]

## The Attempt at a Solution

Not really too sure how to set this one up, my prof said it should be done in polar coordinates. I'm pretty sure that it will come out to be a triple integral but it's been a while since I've done those and could use a little help setting this up.