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Verified answer
L = p × l60 = 6 × l
l = 10 cm
AP = PB = p / 2 = 6 / 2 = 3 cm
L daerah yg diarsir
= 2 × (AP + DB) × AD ÷ 2
= 2 × (3 + 2) × 10 ÷ 2
= 2 × 5 × 10 ÷ 2
= 50 cm^2