The volume (V) of a square-based pyramid can be calculated using the formula:
\[ V = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]
For a square base, the base area (\(B\)) is given by the side length squared (\(s^2\)).
\[ B = s^2 \]
Given that the base length (\(s\)) is 8m and the height (\(h\)) is 14m:
\[ B = 8^2 = 64 \, \text{m}^2 \]
Now, plug these values into the volume formula:
\[ V = \frac{1}{3} \times 64 \, \text{m}^2 \times 14 \, \text{m} \]
Calculate this to find the volume of the square-based pyramid.