From:
[en.wikipedia.org]

we read that:
“The King's Men, approximately 70 closely-spaced stones that form a stone circle of diameter 33 metres.”

I think there is a possibility that the perimeter of these stones was 100 meters exactly thus yielding a diameter of 31.83 meters or a radius of 15.915 meters. What I noticed is that the distance between these stones and the Caral pyramids is exactly 10,000 kilometers or one quadrant of Earth’s perimeter.

More on Caral here:

[en.wikipedia.org]

This is the reason for the 100 meter – maybe internal perimeter if the mean is really 33 meters. Confirmation of this came from the diameter of a Caral amphitheatre type structure that seems also to have a perimeter of 100 meters.

The azimuth between Caral and Rollright Stones is 36.874 degrees an angle that leads us to Kafre pyramid’s apex, thus the theoretical angle is tan(36.87 degrees) = 3/4

click here for the Google pics:

[lexarithmos.net]

It’s hard to explain how a certain culture could have planned theses geodetic and architectural encodings.