Q: Why do you insist on rounding the base?
A: Because it's the most fun you can have with math.
Q: I'm lost, can you explain?
A: No, but that's not the point. The point is, we're all just trying to find the perfect circle here.
Q: But what if I just want to find the circumference?
A: Ha! You think you're that clever, don't you? Well, let me tell you, friend, the circumference is just a byproduct of the circle, the base is where it's at.