Answer:
The answer is option 4.
Explanation:
Firstly, you have to convert the mass of tea bagto kilogram as the question wants the unit in kg/m³.
[tex]1000g = 1kg[/tex]
[tex]100g = 1kg \div 10[/tex]
[tex]100g = 0.1kg[/tex]
So the mass of tea bag is 0.1 kg. Next you have to use density formula ρ = mass/volume. Then you have to substitute the values into the formula :
[tex]ρ = \frac{mass}{volume} [/tex]
Let mass = 0.1kg,
Let volume = 0.025m³,
[tex]ρ = \frac{0.1}{0.025} [/tex]
[tex]ρ = 4kg \: per \: {m}^{3} [/tex]
