Final answer:
The mass of 850 m³ of wood with a density of 300 kg/m³ is 255,000 kg.
Step-by-step explanation:
The mass can be calculated by multiplying the density of the wood by the volume of the wood. In this case, the density is given as 300 kg/m³ and the volume is given as 850 m³. To find the mass, we multiply these two values together:
Mass = Density × Volume
Mass = 300 kg/m³ × 850 m³
Mass = 255,000 kg
Therefore, the mass of 850 m³ of wood with a density of 300 kg/m³ is 255,000 kg.