- #1

karush

Gold Member

MHB

- 3,269

- 5

\begin{align*}\displaystyle

dV&=\int_{0}^{2\pi}\int_{0}^{3}\int_{0}^{z/3}r^3 \, dr \, dz \, d\theta\\

\\

&=\color{red}{\frac{3\pi}{10}}

\end{align*}

ok I tried some rearrange but it just got worse

I would presume this is converting $r^3$ to rectangular coordinates

red is book answer