If Equal, Rigid Spheres Are Arranged in a Simple Cubic

question 47

Multiple Choice

If equal, rigid spheres are arranged in a simple cubic lattice in the usual way (that is, in such a way that they touch each other) , what fraction of the corresponding solid will be empty space? [The volume of a sphere is (4/3) r³, with  = 3.14.]

• A) 0.52
• B) 0.32
• C) 0.68
• D) 0.48
• E) none of these

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