Question

A tank of 30 metre long, 20 metre wide and 12 metre deep is dug in a rectangular field of length 588 metre and breadth 50 metre. The carth sand so dug out is spread evenly on the remaining part of the field. The height of the field raised by it is (A) 25 metre (B) 2.5 cm (C) 2.5 metre (D) 25 cm​

Answer 1

Answer:

Step-by-step explanation:

the volume of the mud =the volume of the well

=(30×20×12)m³

=7200m³

now....

there will be 4 portions on each each side of the well ..of equal length and breadth and the mud will be spread on these 4 portions having same height...

len

i.e.,the area of the remaining portions is...

=[(58×50)-(30×20)]m²

=[2900-600]m²

=2300m²

∴therefore the height of the mud will be....

=(7200/2300)m

≈3.13 m