1 min = 60 s
1 hr = 60 min
So 1 hr = 3600 s
5hr = 18,000 s and 30 min = 1800 s.
Then 5 hr and 30 min = 19,800 seconds.
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1 minute = 60 seconds so 30 min = 30*60 = 1800 sec.
There are 30 seconds in 1/2 a minute
1 min = 60 sec 30 min = 1800 sec
1,000,000 microseconds = 1 second1 min = 60s1 hour = 60 min = 3600s1 day = 24 hours1 month =28 / 29 / 30 / 31 days1 year = 364 or 365 days
1 hr = 60 min½ hr = 30 min(9 x 60) + 30 = 540 + 30 = 570 min