If this were on a test paper, the expected answer would probably be something like:

9 ( 3+√3 )

or

9√3 ( 1+√3 )

To cover all bases, you could answer like this:

= 9 ( 3+√3 ) = 9√3 ( 1+√3 ) ≑ 42.588

⅋&⅋&⅋&

27+9√3 is simplified without use of calculator. With is 42.5884573