Answer:
300 grams
Explanation:
The volume of the glass cube is ...
V = s³ = (5 cm)³ = 125 cm³
This is 125 times the volume of a 1-cm cube, so the weight is 125 times as much:
125 × (2 2/5 g) = 300 g
The glass cube weighs 300 grams.
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