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# Unsure on converting measures on a density question

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1. Hi there.

I am unsure of what to do for the above question and answer.

It looks as though the 2.7 has been divided by 1000 to get into kg/cm^3

So then you would multiply this to get the answer of 2700 kg/m^3

I get that 1000 000 cm^3 = 1m^3 but I thought we would divide by 1000 000 to get into m^3 and not multiply .
2. (Original post by makin)
Hi there.

I am unsure of what to do for the above question and answer.

It looks as though the 2.7 has been divided by 1000 to get into kg/cm^3

So then you would multiply this to get the answer of 2700 kg/m^3

I get that 1000 000 cm^3 = 1m^3 but I thought we would divide by 1000 000 to get into m^3 and not multiply .
Well 2.70 g/cm3 means 1 cm^3 weighs 2.70 g

So, 1m^3 weighs 2.70 x 1 000 000 g

and 1 m^3 weighs 2.70 x 1 000 000 / 1 000 kg
= 2700 kg

Hence density 2700 kg/m^3
3. (Original post by ghostwalker)
Well 2.70 g/cm3 means 1 cm^3 weighs 2.70 g

So, 1m^3 weighs 2.70 x 1 000 000 g

and 1 m^3 weighs 2.70 x 1 000 000 / 1 000 kg
= 2700 kg

Hence density 2700 kg/m^3
Great! Thanks for clearing that up .

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