47. How Much Earth Is in the Hole? A rectangular hole measuring 3 × 3 × 6 (units are irrelevant) is dug in the ground. When the digging is finished, how much earth remains inside the hole? Added 15 February 2009 Show Hint Show Solution Hint: Remember what makes a space a "hole" in the first place—what happened to the soil that used to occupy it? Solution: None. By definition, a hole is an empty space created after the earth has been removed, so there is no earth left inside it.
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