"Be strong" I whispered to my coffee.
23He made the Sea of cast metal, circular in shape, measuring ten cubits from rim to rim and five cubits high. It took a line of thirty cubits to measure around it.
It doesn't say how many cubits were around it, but that it took a line of thirty cubits to measure around it. The conclusion is that it was less than thirty cubits.
It says 10 cubits from rim to rim and 30 cubits round it.
No the conclusion is that it says "to measure around it." Not no measure half a cubit out from it but around it. In any case, if the circle as less than 30 cubits (as is would be if it was inside the line) this makes the biblical Pi as less than 3, even more of an error.