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BH = = = 8
L = 1/2 x 6 x 8 = 24
Luas CFH = 1/2 x a x t = 1/2 x FH x CH
CH = 10 + 8 = 18 ; FH = 6 + 10 = 16
L = 1/2 x 18 x 16 = 144
L.daerah hijau = 24 + 144 = 168