Integral Formulas for Center of Mass of Uniform Density

[1MileCrash]

Homework Statement

I'm being given problems regarding the center of mass of a uniformly dense object, and I am told by the textbook to use:

$\frac{1}{V}\int x dV$

I have no idea what to do with that. I'm pretty sure I won't be learning anything about multiple variable integrals for two years. There must be some other way?

Homework Equations

The Attempt at a Solution

 

[ehild]

In case of a "flat" object of uniform thickness H, dV=y(x) H dx. So you need single-variable integrals.

ehild