Question 1027518
A trench 5m×16m and 0.75m deep is dug.

Volume of Trench = 5*16*0,75 = 60 m^3

 The earth taken out is spread uniformly to form a layer 12.5cm 

deep and 4m wide. (cuboid)

4*0.125*l =90

l= 90/(4*0.125)

length = 180 m




  length of the layer 180m