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Verified answer
Diketahui:r = 42 cm => d = 84 cm
sudut pusat = 54°
Ditanya: Panjang busur AB
Jawab:
Panjang busur AB = Sudut pusat/360° x πd
Panjang busur AB = 54°/360° x 22/7 x 84
Panjang busur AB = 54°/360° x 264
Panjang busur AB = 39,6 cm
Jawabannya C.
Verified answer
54/360 × kell O= 3/20 × 22/7 × 84
= 39,6 cm