Question: A rectangular site is to be levelled, and the amount of earth that needs to be removed must be determined. A survey of the site
A rectangular site is to be levelled, and the amount of earth that needs to be removed must be determined. A survey of the site at a regular mesh of points 10 m apart is made. The heights in metres above the level required are given in the following table.

It is known that the approximate volume of a cell of side x and with corner heights of a, b, c and d is
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Write the total approximate volume in matrix form and hence estimate the volume to be removed.
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Note that for the first row of cells the volume is The second and third rows of cells are dealt with ... View full answer
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