Number of Hills (\( H_n \)):

\[ H_n = \frac{A \times 10000}{S_r \times S_h} \]

Where:

• \( H_n \) is the number of hills.
• \( A \) is the area planted, in hectares.
• \( S_r \) is the row spacing, in meters (m).
• \( S_h \) is the hill spacing, in meters (m).