Question

calculate the number of seconds in a) 30 minutes and b) 7 hours​

Answer 1

Answer:

a, 30 minutes = 1800 seconds

b, 7 hours= 25200 seconds

Answer 2

Answer:

1 minute =60 second

30minutes= 30×60=1800 Seconds

7 hours =

30minutes = 1800seconds

so. 1 hour = 1800×2=3600 seconds

1hour= 3600 second

7hour= 3600×7= 25200seconds

7 hours = 25200 second