A well having 10m inside diameter is dug 8.4 m deep. earth taken out of it is speed all around it to a width of 7 m to form a beautiful embankment . find the height of the embankment . the contracterchanged rs500 per meterfor digging and making the circular embankment on its total height of well and embankment . he measured the height of the embankment as 2m. how much extra money he made?
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