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AB^2 = AO^2 + DO^2
AB^2 = 12^2 + 5^2
AB^2 = 144 + 25
AB = √169
AB = 13 cm
AD = AB = 13 cm
CD = BC = 20 cm
K = AB + BC + CD + AD
K = 13 + 20 + 20 + 13
K = 66 cm
Jawaban: D
= 12² + 5²
= 144 + 25
AD = √169
AD = 13 cm
maka
K = 2(AD + BC)
= 2(13 + 20)
= 2(33)
= 66 cm
Jawb : D
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