If steel is more dense than lake water, why can a boat float?

The average density of the boat, including the steel and air, is less dense than 1.00 g/cm³.
The average density of the boat, including the steel and air, is more dense than 1.00 g/cm³.
Lake water is more dense than pure water.
Steel has a special ability to float regardless of density.

Question

31-01-2020
Social Studies

contestada

If steel is more dense than lake water, why can a boat float?

The average density of the boat, including the steel and air, is less dense than 1.00 g/cm³.
The average density of the boat, including the steel and air, is more dense than 1.00 g/cm³.
Lake water is more dense than pure water.
Steel has a special ability to float regardless of density.

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stunnaaaaaa stunnaaaaaa · Answer 1 · 2020-02-07T16:20:06+01:00

Answer: The average density of the boat, including the steel and air, is less dense than 1.00 g/cm³.

Explanation: The Archimedes rule of ''the floating of an object'' states that the amount of water displaced by an object placed in the water has to be big enough to allow the object to float.

Since a good part of the boat's inside contains air, it means that the combination of steel and air is light compared to the average density of water and it causes the boat to float.