A unit of area often used in measuring land areas is the hectare, defined as 104 m2.

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A unit of area often used in measuring land areas is the hectare, defined as 104 m2. An open-pit coal mine consumes 75 hectares of land, down to a depth of 26 m, each year. What volume of earth, in cubic kilometers, is removed in this time?

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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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Question Posted: Nov 09, 2010 07:02 AM

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A unit of area often used in measuring land areas is the hectare, defined as 104 m2.

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Fundamentals of Physics

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