It is 3 times sq rt 5 which is an irrational number
The square (not sqare) root is approx 23031.054
12768.
16
1.772453850905516027298167483314
9.84
37
51
3.60555127546398
11.18
6.2449979983983982058468931209398
8.6023252670426267717294735350497
15.2970