Answer:
15 cm
Explanation:
The central angle for this problem is:
![(7 \pi)/(10)rad \approx 2.2 rad](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7vgxv34dkc8l6v4bhlfsab69l6f7ceargo.png)
To solve this problem, we have to use an expression that relates, central angle, arc length and radius, which is:
![s=\theta r](https://img.qammunity.org/2020/formulas/mathematics/middle-school/u7rqhalw16br5qgqlg7qvaocutypwg16bo.png)
So, we isolate the radius and solve:
![r=(s)/(\theta)=(33cm)/(2.2rad)=15cm](https://img.qammunity.org/2020/formulas/mathematics/middle-school/48c17mpkuswwi6trfhtfnwl6iuvgiybv5z.png)
Therefore, the right answer is the second option.