18. A unit of area, often used in measuring land areas, is the hectare, defined as 104 m². A new open-pit copper mine in
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18. A unit of area, often used in measuring land areas, is the hectare, defined as 104 m². A new open-pit copper mine in
18. A unit of area, often used in measuring land areas, is the hectare, defined as 104 m². A new open-pit copper mine in North-Western Province plans to excavate 75 hectares of land, down to a depth of 26 m, each year. What volume of earth, in cubic kilometers, would be removed during this time?
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