△ BMG is a regular triangle,
∴bg=mg;
In addition, the flower planting part in the picture consists of two regular hexagons.
∴GM=GF=EF
∴AF=GF=BG=2,
The side length of a regular hexagon is 2,
A regular hexagon has a convex OE,
So the perimeters of two hexagons are 6×2+6×2-4=20.
∴ The figure circumference of the flower planting part is 20m. ..
So the answer is 20.