The easiest thing would be to convert to minutes first, then to seconds.
There are 60 minutes in an hour, so to convert from hours to minutes, you multiply by 60:
16 x 60 = 960
There are 60 seconds in a minute, so to convert from minutes to seconds you multiply by 60 again:
960 x 60 = 57,600
So there are 57,600 seconds in 16 hours.
6.389 hours.
7 of them.
1 hour = 60 x 60 = 3600 sec 5 hours = 5 x 3600 = 18000 sec 30 min = 1800 sec Therefore 5 hours and 30 minutes = 18000 + 1800 = 19800 sec
20 min=1,200 sec 6 hours=21,600 sec 6 hours and 20 minutes=22,800
58 minutes 20 seconds.
6.389 hours.
2 hours
43200
7 of them.
9000 sec = 2.5 hours.
440
1 hour = 60 x 60 = 3600 sec 5 hours = 5 x 3600 = 18000 sec 30 min = 1800 sec Therefore 5 hours and 30 minutes = 18000 + 1800 = 19800 sec
20 min=1,200 sec 6 hours=21,600 sec 6 hours and 20 minutes=22,800
1 hour = 60 x 60 = 3600 sec 48 hours = 48 x 3600 = 172800 sec
100 sec = 0.02777... hour (rounded) 1 hour = 3,600 seconds
58 minutes 20 seconds.
1 hour = 3,600 seconds