To find the volume of a cylinder, we use the formula:
\[ V = \pi r^2 h \]
where \( V \) is the volume, \( r \) is the radius, \( h \) is the height, and \( \pi \) is approximately 3.14.
Given:
- Height (\( h \)) = 30 inches
- Radius (\( r \)) = 8 inches
Substituting the values into the formula:
\[ V = 3.14 \times (8)^2 \times 30 \]
First, calculate \( (8)^2 \):
\[ (8)^2 = 64 \]
Now substitute back into the formula:
\[ V = 3.14 \times 64 \times 30 \]
Next, calculate \( 64 \times 30 \):
\[ 64 \times 30 = 1920 \]
Now substitute back into the formula:
\[ V = 3.14 \times 1920 \]
Now calculate \( 3.14 \times 1920 \):
\[ 3.14 \times 1920 = 6028.8 \]
Thus, the volume of the water bottle is:
\[ \boxed{6028.8} \]
The correct answer is 6028.8 cubic inches.