How many seconds are there in one hour?

To determine how many seconds are in one hour, it's important to know that one hour consists of 60 minutes, and each minute contains 60 seconds.

Calculating the total number of seconds in an hour can be done by multiplying the number of minutes in an hour by the number of seconds in a minute:

1 hour = 60 minutes

1 minute = 60 seconds

Therefore:

60 minutes/hour × 60 seconds/minute = 3600 seconds/hour

This calculation confirms that there are 3600 seconds in one hour, making the first option the correct answer.