I didn't get a chance to write it down during class. What are the dimensions of a hectare furrow slice?
100m by 100m, I believe.
..........and as specified in the question this hectare furrow slide also has thickness of 20 cm (or 0.2). Hence, to calculate volume of the hectare furrow slice take these dimensions into account: 100 m x 100 m x 0.2 m