Question

a 10 M deep well with diameter 1.4 M is dug up in a field and Earth from digging it spread of evenly on the adjoining rectangular field the length and breadth of the field are 55 M and 14 M respectively find the thickness of the earth layer spread.

Answer 1

THANKS FOR ASKING QUESTION

DIAMETER = 2× RADIUS = 1.4m
SO, RADIUS = r = 0.7m

SO , VOLUME OF WELL = pie × r ×r × height
= 22/7 × 0.7×0.7×10 = 15.4m3
SO, VOLUME OF EARTH TAKE N OUT=
l× b × h = 55×14× h=15.4
SO, h=0.02m
THEREFORE EARTH TAKEN OUT AND WHEN SPREADED HAS HEIGHT 0.02m