tolong dijawab bsk hrs dikumpul

rumusnya:
[tex]ab = \frac{ < pusat}{ {360}^{o} } \times 2 \times \pi \times r \\ \: \: \: \: \: = \frac{ {75}^{o} }{ {360}^{o} } \times 2 \times \frac{22}{7} \times 14 \\ \: \: \: \: \: = \frac{75}{360} \times 88 \\ \: \: \: \: \: = \frac{6600}{360} \\ \: \: \: \: \: = 18 \frac{1}{3} \: cm[/tex]