Respuesta :

[tex]\begin{gathered} \text{the lenght of an arc that subtends an angle of }\theta\text{ is } \\ L=r\theta \\ \\ \text{thus } \\ L=11\cdot\frac{\pi}{2} \\ \\ L=\frac{11}{2}\pi \\ \\ \text{ } \end{gathered}[/tex]

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