It isn't just a single linear measurement, it would be multiple measurements. Also they weren't using meter circumference wheels, the wheels would be, to us, some arbitrary standard that would be revealed when dividing the two lengths by pi.

I think the point of the post re: the tired paleontologist is that the pi-related ratio just isn't that interesting, Ancient Aliens uses math to mystify the subject, not make it simpler to understand. So I think the thing youre hung up on is the point of the post. It just isn't that interesting of an insight if you understand the math, but of you present it a certain way, youre like selling the idea that ancient civilization had access to abstractions (like pi) that maybe didn't "exist" for ancient civilizations. But when you think if it in terms of practical applications, you realize that the tools and the work that people were doing didn't require exactness of abstraction, just exactness of practical function.

Ancient Egyptians did have a concept of pi, but to them it was 22/7, which is more than close enough for any practical application. Pi is 3.1415.. and 22/7 is 3.142. They didn't need that exact of a figure to build a pyramid, their calculations were as good or better than our engineers use in practical application. Civilizations that are around for thousands of years end up figuring shit out when they try to do stuff. We use mathematics to plan, and so did they; but to build something you don't need someone who has memorized pi, you just need engineers with practical experience building things. Ancient civilizations had that, their tools contained their methods of abstraction, even in rare cases their books did not.

But Ancient Aliens never imagines real people with real experiences, it assumes stupidity and brutishness in its subject, when actually they are objectively stupid and brutal. You're confusing rationality for sensationalism, which I appreciate imagining the world as being more rational than it is.