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The density of a metal is 8 g/cm³. A cube-shaped sample has mass 64 g. What is the length of one edge of the cube, in cm?
A$8$
B$4$
C$2$
D$3$
Answer & Solution
Correct answer: C. $2$
Volume = mass/density = $64/8 = 8$ cm³. Edge = cube root of volume = $\sqrt[3]{8} = 2$ cm.
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