$=\int_{-\frac{\Pi }{2}}^{\frac{\Pi }{2}}d\psi \int_{0}^{cos\psi }\left ( r^{2} +1\right )rdr=\int_{-\frac{\Pi }{2}}^{\frac{\Pi }{2}}(\frac{cos^{4}\psi }{4}+\frac{cos^{2}\psi}{2} )d\psi$
$= \int_{-\frac{\Pi }{2}}^{\frac{\Pi }{2}}\frac{cos4\psi +12cos2\psi +11}{32}= \frac{11\Pi }{32}$