Answer
$\log_{3}3^{8}=8$.
Work Step by Step
$\log_{b}x=y $ is equivalent to $ b^{y}=x.\qquad (*)$
Consequently,$\qquad \log_{b}b^{x}=x.\qquad (**)$
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Here, b=3, x=8, and due to (**),
$\log_{3}3^{8}=8$.
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