Question

pic of dimensions 15 m into 12 m into 30 M is dug and the earth taken out is disposed of in a carrier which can carry a maximum load of 5 14 cube of a the least number of rounds the career has to make to dispose of the Earth is​

Answer 1

Given, Dimension of the field = 15 m × 12 m

Dimension of the pit = 8 m × 2.5m × 2m

Volume of earth removed from the pit = 8m × 2.5 m × 2 m = 40 m3

Area of the remaining field

= Area of the field – Area of the pit

= 15 m × 12 m – 8 m × 2.5 m

= 160 m2

Since, the earth removed is evenly spread over the remaining area of the field.

∴ Increase in level of remaining field × Area of remaining field  = Volume of earth removed from the pit

Increase in level of remaining field = 40/160 =0.25m