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segitiga BDH alas = BD, tinggi = DH
luas BDH = BD x DH / 2 =
6√2 x 6 /2 = 18√2 cm²
sgitiga ACE alas = AC, tinggi = AE
luas ACE = AC x CE /2 =
6√2 x 6 /2 = 18√2 cm²