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a. BD^2 = AD.CD
BD^2 = 9.16
BD^2 = 144
BD = √144
BD = 12
jadi panjang BD adalah 12 cm
b. BC^2 =CD.AC
BC^2 = 16. 25
BC^2 = 400
BC = √400
BC = 20
jadi panjang BC adalah 20 cm
A. BD² = AD × CD
BD² = 9 × 16
BD² = 144
BD = √144
BD = 12
B. BC² = CD × AC
BC² = 16 × 25
BC² = 400
BC = √400
BC = 20