Four Fours/Lemmata/Three Fours/12/Solutions

Puzzle: Three Fours: $12$

Using exactly $3$ instances of the number $4$, the task is to write an expression for $12$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$12 = 4 + 4 + 4$

Solution $2$

$12 = \dfrac {4 + 4} {\sqrt {. \dot 4} }$