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3 : 2
d2 - d1 = 4
3x - 2x = 4
x = 4
d2 = 3 × 4 = 12
d1 = 2 × 4 = 8
Luas = d1 × d2 ÷ 2
= 8 × 12 ÷ 2
= 48 cm2
smg mmbantu