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Jawab:
Penjelasan dengan langkah-langkah:
teorema Phytagoras.
a² + b² = c²
Diameter = 34 cm ----------> r = 17 cm
AC = 25 cm --------> OC = 25 - 17 = 8 cm
OD = r = 17 cm
CD = BC
OC² + CD² = OD²
8² + CD² = 17²
64 + CD² = 289
CD² = 289 - 64
CD² = 225
CD = √225
CD = 15
BD = 2(15)
BD = 30 cm
opsi pilihan ( C )
semoga bisa membantu