physics, calculating the mass of an object with volume and density?

  • Thread starter Thread starter ambe_bambi16
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ambe_bambi16

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i have tried to do this exercise so many times but i can't get the right answer...

imagine that you buy a rectangular piece of metal with the dimensions 5mm x 15mm x 30mm with a mass of 0.0158kg. The seller told you that it is gold. To verify, you calculate the average density of the piece. Is this a scam?
 
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