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 of the base,
- \( h \) is the height.
In this case, the radius \( r = 8 \) inches and the height \( h = 40 \) inches. Plugging these values into the formula, we have:
\[ V = \pi (8^2)(40) \]
Therefore, completing your formula would look like this:
\[ \pi (8^2)(40) \]
So in your form, it would be:
\[ \pi \times (8^2) \times (40) \]
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