Mind giving me a few tips on the following problem?
$\text{Find} \iiint_R x \, \mathrm{d}V \ \text{and} \ \iiint_R z \, \mathrm{d}V \\
\\ \text{over that part of the cone} \\
0 \, \geq \, z \, \geq \, h \left( 1 - \frac{\sqrt{x^2+y^2}}{a} \, \right ) \\
\text{that lies in the first quadrant}$
Sorry for nt asking more about Kananappan, I am sure he will be back soon =)