Yes it is when rounded to 7 decimal places but its exact value is 3 times the square root of 2
The square (not sqare) root is approx 23031.054
12768.
1.772453850905516027298167483314
3.60555127546398
16
8.6023252670426267717294735350497
11.18
37
51
6.2449979983983982058468931209398
It is: 400
No, it is not.