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2 : 3
2y : 3y
luas = d1 x d2 x 1/2
432 = 2y x 3y x 1/2
432 x 2 = 2y x 3y
864 = 6y²
y² = 864 : 6
y² = 144
y = √144
y = 12
d1 = 2y = 2 x 12 = 24 cm
d2 = 3y = 3 x 12 = 36 cm