What is the value of the expression $(\log_6(36))(\log_3(9)) $ ?

$2$

$3$

$4$

$5$

$18$

Approach 1

$$ (\log_636)(\log_39) $$ $$ = (\log_66^2)(\log_33^2) $$ $$ = (2\log_66)(2\log_33) $$ $$ = (2)(2) $$ $$ = \boxed{4} $$

Approach 2

You can use your calculator to evaluate this expression.