How long is a time interval of 1800 billion nanoseconds?

To determine how long a time interval of 1800 billion nanoseconds is, you can start by converting nanoseconds into a more manageable unit of time.

1 billion nanoseconds is equal to 1 second. Therefore, 1800 billion nanoseconds is equivalent to 1800 seconds.

Next, you can convert seconds into minutes. Since there are 60 seconds in a minute, you divide 1800 seconds by 60, which gives you 30 minutes.

Since half an hour is defined as 30 minutes, this conversion shows that the time interval indeed corresponds to half an hour. Thus, the correct answer accurately reflects the conversion from nanoseconds to minutes, providing clarity on how these units relate to time measurement.