# Math Help - Two triple integrals

1. ## Two triple integrals

Not sure how to do these, any help will be appreciated.

2. for the first one $dv = r dr d\theta dz$, remember $x = r cos \theta$. the r goes from 2 -> 3 $\theta$ goes form o to 2pi. the z limit are from 0 to $r ( \cos \theta + \sin \theta) + 5$. order matters here, do the z integral first.

for the second one, use $dv = r^2 sin \theta dr d\theta d \phi$, using limits r going form 1 to 2 , $\theta$ form 0 o pi and $\phi$ form 0 to 2pi. and remember $z = r cos\theta$.

Bobak