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3 December, 07:34

How many seconds are in 9 h? a. 400 s b. 540 s c. 32,400 s d. 64,800 s

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  1. 3 December, 07:43
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    60 seconds in a minute ... and 60 minutes in an hr.

    60 x 60 = 3600 seconds per hr

    3600 * 9 = 32,400 seconds in 9 hrs
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