To calculate the volume of the water tower, we can assume it is in the shape of a cylinder. The formula for the volume \( V \) of a cylinder is:
\[ V = \pi r^2 h \]
where \( r \) is the radius, \( h \) is the height, and \( \pi \) is approximately 3.14.
Given:
- Height \( h = 25 \) meters
- Width (diameter) = 16 meters, so the radius \( r = \frac{16}{2} = 8 \) meters.
Now, substituting the values into the formula:
\[ V = 3.14 \times (8)^2 \times 25 \]
Calculating \( (8)^2 \):
\[ (8)^2 = 64 \]
Now substitute back into the volume formula:
\[ V = 3.14 \times 64 \times 25 \]
First, calculate \( 64 \times 25 \):
\[ 64 \times 25 = 1600 \]
Now calculate the volume:
\[ V = 3.14 \times 1600 = 5024 \]
Thus, the volume of the water tower is:
\[ \boxed{5,024 \text{ cubic meters}} \]
The answer among the options provided is 5,024 cubic meters.