0.9kg ice melts into water, and the volume is reduced by 0.1m3 0.9kg ice melts into water, which reduces the volume by 0.1m3 ...

0.9kg ice melts into water, and the volume is reduced by 0.1m3 0.9kg ice melts into water, which reduces the volume by 0.1m3 ...

0.9kg ice = 0.9kg water
Because the density of water is 1000 kg / m3
Then we can get V water = 0.9kg △ 1000kg / m3 = 0.0009m3
The volume of ice is 0.0009m3 + 0.1m3 = 0.1009m3
The density of ice is 0.9kg △ 0.1009m3 ≈ 9kg / m3