Question

The length and breadth of a rectangular field of the village are 20m and 15 m respectively.For the construction of pillars in the 4 corners of that field 4 cubic holes having the depth of 4 m are dug out and the soils removed are dispersed on the remaining land. Let us calculate and write the height of the surface of the field that is increased by.

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Answer 1

Answer:

The volume of soil of one hole =43 cu-m = 64 cm

∴ the volume of soil of 4 holes =64×4 cu - m = 256 cu -m

Let the height of the surface of the field be increased by h metres. ∴ the volume of the soil thus increased =20×15×h cu- metres

As per condition 20×15×h=256 or ,h=25620×15=0.85 metre

hope it helps