Question
EFG and FGH are two identical equilateral triangles. EF = FJ and HG = GK.  Given that EH = 42 cm and JK = 72 cm, find the total unshaded areas.
3 m

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EFG and FGH are two identical equilateral triangles. EF = FJ and HG = GK.  Given that EH = 42 cm and JK = 72 cm, find the total unshaded areas.