Density — practice question

The tank in the diagram measures $5.0\,\text{m} \times 4.0\,\text{m} \times 4.0\,\text{m}$. It is full of water with density $1000\,\text{kg m}^{-3}$. What is the mass of the water in the tank?

• A12.5 kg
• B62.5 kg
• C16000 kg
• D80000 kg