Four Fours/36/Solutions/1

Puzzle: Four Fours: $36$

Using exactly $4$ instances of the number $4$, the task is to write an expression for $36$, using whatever arithmetical operations you consider necessary.

Solution

$36 = \paren {\paren {\sqrt {\dfrac 4 {. \dot 4} } }^{\sqrt 4} } \times 4$