A well of radius 7m is dug 8m deep. The earth taken out of it is evenly spread all around it to a width of 21 to form and embankment. What is the height of the embankment?
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Answer:
0.53m
Step-by-step explanation:
radius of inside tank = 7m
height = 8 m
volume = 1231 m^3
outer radius = 7+21
= 28 m
area of embankment = area of outer circle - area of inner circle
= 2310 m^2
height of embankment = volume/area
=1231/2310
=0.53m=53.3 cm
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