91/2 hours is 34,200 seconds.
There are 19800 seconds in 5 and a half hours.
2 and a half hours is 90 seconds.
10.5 hours is 37,800 seconds.
Half an hour is 1800 seconds. 3 half hours are 5,400 seconds.
12,600 seconds.
108,030 seconds.
Nine and a half hours.
There are: 90*60 = 5,400 seconds
There are 32,400 seconds and 540 minutes in nine hours.
There are 86,400 seconds in a day (24 hours x 60 minutes x 60 seconds). Therefore, in a day and a half (36 hours), there would be 129,600 seconds (36 hours x 60 minutes x 60 seconds).
23400 seconds. There is 3600 seconds in 1 hour and 1800 seconds in half hour. You multiply 3600 by 6 hours; then you add 1800 and you'll get 23400.
60 seconds an 1 minute 60 minutes in 1 hour 30 minutes in half an hour 90 minutes in one and a half hours. So 90 minutes * 60 seconds = 5400 seconds