Question

A well 14 m Diameter is dug 8m deep. The earth taken out is spread around to a width of 21 meter to make a embankment. Find the height of Embankment. Plz solve its very urgent tommorow is my exam of maths

Answer 1

Diameter of well=14m
Radius=7m
Depth=8m
Earth taken out=22 *7*7*8/7=176*7=1232cu m
Radius of embankment =7+21=28m
Vol=1232cu m
Height=1232*7/22*28*28
=616/44*28=154/11*28=14/28=0.5m=50cm