[R] Calculating distance between longitude,latitude of 2 points

[Lily_stats]

Hi all, 

I would like to know a way of calculating the distance between 2 points when
I already have the longitude and latitude of the points.

For example :

Point 1 :  52° 9'54.00"N	  4°25'8.40"E
Point 2 :  52°27'46.80"N	  4°33'18.00"E

Distance between point 1 and point in km ....

Is there any functions already available for this ?

Any help will be much appreciated! 


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