Question

3 hours 38 minutes into hours​

Answer 1

and that's your answer

Answer 2

As,
3 hour = 60* 3 mimnute...
(as 1 hour = 60 minute)
so, 3 hour = 180 minutes
now , 180+ 38 minute = 218 minutes..
and 1 hour = 60 min.
so, 218/60 = 3.63 hours