Answer: 0.183 g/cm³
Step-by-step explanation:
density = mass/volume = m/v
m = 12.6 g (I assume grams? you didn't provide the unit)
cube has equal sides, so volume of the cube = 4.1³ = 68.9 cm³
density = 12.6g/68.9 cm³ = 0.183 g/cm³
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