Consider the following.

${\displaystyle \underset{-2}{\overset{2}{}}}{\displaystyle \underset{0}{\overset{\sqrt[\phantom{2}]{4-x^2}}{}}}{\displaystyle \underset{0}{\overset{4-x^2-y^2}{}}}\sqrt[\phantom{2}]{x^2+y^2}dzdydx$

Write the above using cylindrical coordinates. $($Choose ${\displaystyle \underset{0}{\overset{A}{}}}{\displaystyle \underset{0}{\overset{B}{}}}{\displaystyle \underset{0}{\overset{C-r^2}{}}}()dzdrd$

$A=$

$B=$

$C=0\mathrm{.}0.$ Choose $0.$