$(2)$ For each of the given iterated integrals, either sketch or deseribe the solid region whose volume is being calculated. Then evalunte the volume,

Note: the region $($nud the volume$)$ conld be infinite.

$($a$){\displaystyle \underset{0}{\overset{\frac{}{3}}{}}}{\displaystyle \underset{0}{\overset{2}{}}}{\displaystyle \underset{0}{\overset{1}{}}}{}^{2}sinddd$