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spectacularpeople spectacularpeople
  • 02-05-2018
  • Mathematics
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answer these three questions

answer these three questions class=
answer these three questions class=
answer these three questions class=

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Аноним Аноним
  • 02-05-2018
Density = mass/volume

Volume = 0.3 x 2.1 x 0.1 = 0.063 mi³

Density = 0.07 ÷ 0.063 = 1.1 kg /mi³

Answer:  1.1 kg /mi³

Volume = 7 x 4 x 10 = 280 dm³

Density = 10690.4 ÷ 280 = 38.16L / dm³

Answer: 38.16L / dm³

Density = 8550405 ÷ 1213.4 = 7047 people / km²

Answer: 7047 people / km²

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