To calculate the volume \( V \) of a sphere, we can use the formula:
\[ V = \frac{4}{3} \pi r^3 \]
where \( r \) is the radius of the sphere. The radius is half of the diameter.
Given that the diameter \( D = 18.8 \) m, we can find the radius:
\[ r = \frac{D}{2} = \frac{18.8}{2} = 9.4 \text{ m} \]
Now, we can substitute the value of \( r \) into the volume formula. Using \( \pi \approx 3.14 \):
\[ V = \frac{4}{3} \times 3.14 \times (9.4)^3 \]
First, calculate \( (9.4)^3 \):
\[ 9.4^3 = 9.4 \times 9.4 \times 9.4 = 830.584 \]
Now, substitute \( 9.4^3 \) into the volume formula:
\[ V = \frac{4}{3} \times 3.14 \times 830.584 \]
Next, calculate \( \frac{4}{3} \times 3.14 \):
\[ \frac{4}{3} \times 3.14 \approx 4.18666667 \text{ (approximately 4.19)} \]
Now, continue calculating the volume:
\[ V \approx 4.18666667 \times 830.584 \approx 3477.797 \]
Finally, round this value to the nearest tenth:
\[ V \approx 3477.8 , \text{m}^3 \]
Therefore, the volume of the sphere is approximately:
\[ \boxed{3477.8 , \text{m}^3} \]
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