Find Current Location Lati/Long with surround 50 km dist

Question

Hi Team,

 

I am trying to get Current location Latitude and longitudes and radios of current location sarround 50 km Long/Latit s numbers using angularjs.

 

How can i approch and get the solution, I request you please give me the solution above solution.

 

 

Regards,

Bharath Peggem