Write as a rational exponent or in radical form: (√36)^3?

6^3

(√36)^3 = [36^(1/2)]^3 = 36^(3/2) -- rational exponent
or
(√36)^3 = √(36^3) -- radical form

Incidentally, it evaluates to
(√36)^3 = 6^3 = 216