Pada gambar disamping,diketahui jari-jari OB=3.5cm dan besar

rumus :
[tex] \frac{sudut \: pusat}{360} \times 2 \times \pi \times r \\ = \frac{105}{360} \times 2 \times \frac{22}{7} \times 3.5 \\ = \frac{105}{360} \times 2 \times \frac{22}{2} \\ = \frac{105}{360} \times 22 \\ = \frac{2310}{360} \\ = 6\frac{5}{12} [/tex]

Jawaban D.


Semoga membantu ✔