### Question Description

## Explanation & Answer

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mass = density x volume

the volume of this bar is 5.6 cm x 14 cm x 30 cm = 2352 cm^3

and we need to know the density of gold is19.3 g/cm^3

therefore the mass of the bar is 19.3g/cm^3 x 2352 cm^3 = 45393.6 g = **45.4** kg