51 Bangun Datar Luasnya 2 d 2 d 1 d = 15 cm 1 d = 15 cm 2 3 18 cm 18 cm 20 cm 4 D 14 cm C E F G H A B EF = GH = 6 cm 5 E 12 cm D G 17 cm C A B AB = ED = 12 cm GC = 17 cm EA = 18 cm Matematika Kelas VI Menghitung Luas