>>11271154
>I don't think math and geometry works this way
It's a rough estimate of areas and the numbers are probably wrong, but the math checks out according to this informative diagram I have drawn.
>and they always print how much mg of extract is in each drop
The one I bought doesn't have a dropper, it just says it's 90-95% pure which I assume may have something to do with not wanting to recommend a dose