a well is dug 12m deep and has a radius of 0.7m. the earth taken out is spread over a rectangular plot 11m by 14m to raise the ground . what is the height by which the ground is raised ??
Answers
Answered by
41
For a well,
h=12m
r=0.7m
For a rectangular plot,
l=11m
b=14m
A/q:-
volume of the well = volume of rectangular plot
=>πr2h = lbh
=>22/7×7/10×7/10×12 = 11×14×h
=>462/25=154h
=>154h=18.48
=>h=18.48/154
0.12m
Hence,
the height up to which the ground is raised is 0.12 m.
h=12m
r=0.7m
For a rectangular plot,
l=11m
b=14m
A/q:-
volume of the well = volume of rectangular plot
=>πr2h = lbh
=>22/7×7/10×7/10×12 = 11×14×h
=>462/25=154h
=>154h=18.48
=>h=18.48/154
0.12m
Hence,
the height up to which the ground is raised is 0.12 m.
Answered by
1
Answer
height=0.12m
Explanation
R=0.7m
h=?
rectangular plot
breadth=14m
A.T.Q
volume of rectular plot /
volume of wall
11×14×h=22/7×(0.7)²×12
h=22×0.7×0.7×12/7×11×14/10×10
h=12/100=0.12m ans.
Similar questions