How many lengths of 16mm iron rods makes 1 ton?

To determine how many lengths of 16mm iron rods make up 1 ton, we first need to know the density of the iron, which is approximately 7,850 kg/m³. A 16mm diameter rod has a cross-sectional area of about 201mm², or 0.000201 m². Assuming a standard length (e.g., 1 meter), each rod weighs around 1.57 kg, meaning approximately 636 rods are needed to make 1 ton (1,000 kg).