The formula to calculate the surfboard volume is:
\[ \text{SV} = L \times W \times T \times SF \]
Where:
Loam is a type of fertile soil that is a mixture of sand, silt, and clay, and it contains humus. Loam soil holds nutrients and has a texture that retains water long enough for plant roots to access it, yet it drains well, preventing water from sitting and causing root rot.
Example:
Step 1: Calculate the surfboard volume:
\[ \text{SV} = 72 \times 20 \times 2.5 \times 0.55 = 1980 \text{ in³} \]