The volume of 1kg of platinumis (1000/21.45)cm³, that is approximately 50cm³. So 1tonne of platinum has an approximate volume of 50,000cm³, or 1/20 m³. So about 5m^3 of platinum is produced per year, and so the total volume ever produced is250m^3 measuring 10m5m5m,which issimilar to the size of a house.