How many seconds r in a hour?

Answer 1

60 sec x 60 min = 3600 seconds in an hour.

If you want to do this w/o a calculator, do 6x6 and then add the two 0's at the end (6x6=36 --> 3600). Also I'd recommend a simple Google search or even just searching Answers.com, as this question is simply too easy and too common..