Tolong bantu jawab yaa!!besok udah di kumpul

Kelas 8 Matematika
Bab Lingkaran

Diketahui:
Panjang busur AB = 75 cm
∠AOB = 50°
∠BOC = 180° - 50° = 130°

Ditanya:
Panjang busur CB = ... cm?

Penyelesaian:
AB / CB = ∠AOB / ∠BOC
75 cm / CB = 50° / 130°
CB = 75 cm x 130° / 50°
CB = 75 cm x 2,6
CB = 195 cm

Jawaban: B. 195 cm

Semoga Membantu^-^

Mapel : Matematika
Bab : Lingkaran

<BOC = 180 - 50
<BOC = 130 derajat

AB/BC = 50/130
75/BC = 5/13
75 × 13 = 5BC
975 = 5BC
975/5 = BC
195 = BC

BC = 195 cm

(B)