But wait for it. If you look at the pendulum formula [1] you will realize that g ≈ π^2 (i.e. 3.14^2 roughly equals 9.8) is not a coincidence, it's a consequence of the original definition of the meter!
The metre was _actually_ originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole. Obviously, that ended up having its own issues, hence the subsequent refinements until we settled on using the speed of light in a vacuum as the basis for it.
I don't think you can call it the original definition, because (a) that definition never got any universal acceptance (not even among scientists), (b) didn't work (as it gave different results on different locations) and (c) wasn't particularly close in value to the current definition.