Remember the formula for arc length:
[tex]L = r \theta[/tex]
- [tex]r[/tex] is the radius of the circle
- [tex]\theta[/tex] is the central angle
By substituting in values given, we can find [tex]r[/tex].
[tex]r \dfrac{7 \pi } {10} = 33[/tex]
[tex]r = \dfrac{330}{7 \pi} \approx 15[/tex]
The answer is choice B, 15 cm.
