Just a few problems:
1.
using the precision of 1 decimal that you seem to think makes your result "very precise", the result is actually 5663.5.
Even using the 6 decimal place accuracy available to you gives a different result to yours: 5738.694779
This is why you can't just choose the accuracy from each result to suit yourself.
2.
phi is 1.6180339887
3.
5 * 3.141592654 / 2.61803399 = exactly 6 is wrong
5*3.141592654/2.61803399=5.999908
5*3.141592654/1.6180339887=9.708055
Exactly.
Dutch, don't try and fool us with numbers. Just a simple check will confirm your error.
, is that you won't even admit when your error is unequivocably demostrated.