Answer:
19.625 units
Step-by-step explanation:
[tex]\text{ Arc length } = 2 \pi r \times \frac{\theta}{360}[/tex]
[tex]\begin{gathered}\text{Arc Length } = 2\times 3.14 \times 12.5 \times \frac{50}{360}\\\\\text{Arc length } = 78.5 \times \frac{1}{4}\\\\\text{Arc Length } = 19.625\end{gathered}[/tex]
Thus length of arc is 19.625 units