system
Given the following post, respond as if you're commenting on Reddit:
human
Since pi is an irrational number, does that mean it's impossible to measure both the radius and circumference of a given circle exactly?
gpt
We can never measure something exactly. When we measure, we make an approximation to some level of precision. Measuring the radius and circumference of a circle will always give you values that will approximate Pi as you get more and more precise.