First, figure out volume. This is done by multiplying l x w x h.
4 cm x 2 cm x 1 cm = 8 cm^3
The density is 120 g/cm^3.
We need to find grams.
So, 120 g/cm^3 = x number of grams / 8 cm^3.
Solve for x.
x = 960 grams.
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