engineering volume under spot heights calculation

[@willo_huncho7844]

Thanks

[@KaumaHarriet-w7l]

You did not explain how the 4 came in the column of square

[@IwordsShotsEmpire]

those are the numbers of squares found in the spot

[@anti-poverty3103]

The junctions of the square grid shown below were levelled to determine the volume of excavation necessary in the construction of a basement floor. The reduced levels of the grid points are as shown.
X
X
X
185.67
186.22
187.34
X
X
187.45
188.00
X
X
X
X
X
186.33
187.03.
187.22
X
X
X
186.64
186.98
187.44
X
187.08
X
187.56.
187.90
X
X
X
X
187.35.
187.89
187.34
187.43
X
X
X
X
187.26
187.24
187.46
188.02
187.93
The horizontal distance between the grid points is 20 m and the required formation level of the basement floor foundations is to be 178.00 m. Calcu- late the volume of the excavation within the grid area.
Please I need help 🙏🙏🙏

[@IwordsShotsEmpire]

That's how its easiest, I don't see other way

[@anti-poverty3103]

@@IwordsShotsEmpire please can you solve it us content for me