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In a homogenous unconfined aquifer of area $3.00\:km^2$, the water table was at an elevation of $102.00\:m$. After a natural recharge of volume $0.90$ million cubic meter $(Mm^3)$, the water table rose to $103.20\:m$. After this recharge,ground water pumping took place and the water table dropped down to $101.20\:m$ . The volume of ground water pumped after the natural recharge, expressed  (in $Mm^3$ and round off to two decimal places), is  ______.
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