Answer: 8.3 ft
Explanation:
Here, The volume of this perfectly spherical balloon is approximately 2361.7 cubic feet.
Since, the volume of a sphere,

Where r is the radius of the sphere.
Here V= 2361.7 cubic feet
Therefore,

⇒

⇒
≈8.3 feet
Thus, the radius of the sphere = 8.3 feet