Step 1: You will need to find the radius using the formula: \( C = 2\pi r \).
Step 2: Rearranging the formula, we get \( r = \frac{C}{2\pi} \). Now substitute the circumference value into the equation: \[ r = \frac{518.1}{2\pi} \approx \frac{518.1}{6.2832} \approx 82.6 \text{ feet} \]
Step 3: Next, we will use the radius to calculate the volume of the sphere using the formula for volume \( V = \frac{4}{3}\pi r^3 \). \[ V = \frac{4}{3}\pi(82.6)^3 \approx \frac{4}{3} \pi (564,016.53) \approx 2,364,271.4 \text{ cubic feet} \]
The answer is approximately 2,364,271.4 cubic feet, and the unit we would use is cubic feet.