What is the distance from Dublin, ireland to chicago, america?

Question

What is the distance from Dublin, ireland to chicago, america?

Answer 1

Although I can't give you mileage, I can tell you it would take approximately 13-15 hours to get there.

Answer 2

Chicago (c): 42d N / 87d 40' W

Dublin (b):53d 21' N / 6d 16' W

The great circle distance (c) is calculated thus

cos a = cos c * cos b + sin c * sin b * sin  A

c & b being co-latitudes (90 - #), sin & cos get swapped

A = difference in longitude = 81d 24'= 81.4 d

cos a = sin c * sin b + cos c * cos b * sin(81.4)  

a = 52.90233 d (Arc)

=52.90233 X 60 naut.miles = 3174.139 naut.miles

=52.90233 X 69 st. miles = 3650.26 st. miles

=52.90233 X 111 km = 5872.158 km