Convert the integral from rectangular coordinates to both cylindrical and spherical coordinates

${\displaystyle \underset{-1}{\overset{0}{}}}{\displaystyle \underset{-\sqrt[\phantom{2}]{81-x^2}}{\overset{\sqrt[\phantom{2}]{81-x^2}}{}}}{\displaystyle \underset{x^2{y}^2}{\overset{81}{}}}xdxdydx$

Glindical:

sulerical:

Evaluate the simplest Herabed indegral.

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