Answer:
Density = 1.11 g/cm³, will not float on water
Step-by-step explanation:
Assuming the other dimension missing is 4.0 cm
Then we can find the volume of the piece of wood.
Volume = Length × width × height
Volume = 6.0 cm × 3.0 cm × 4.0 cm
= 72 cm³
We are required to find the density of the wood.
Density = mass ÷ Volume
Mass of the wood = 80.0 grams
Therefore;
Density = 80.0 g ÷ 72 cm³
= 1.11 g/cm³
Hence, the density of the wood is 1.11 g/cm³
Water has a density of 1 g/cm³ and therefore the wood will not float since it is denser than water.