The lead ingot has the shape of a rectangular parallelepiped 15 cm high, 25 cm long and 12 cm wide.

The lead ingot has the shape of a rectangular parallelepiped 15 cm high, 25 cm long and 12 cm wide. one student stated that he could lift the ingot, and another claimed that no one could. which one was right? weight of 1 cm3 of lead 15.3 g

1. Since the lead ingot has the shape of a rectangular parallelepiped, according to the condition of this problem, then its volume is equal to the product of length, width and height, that is, 15 * 25 * 12 = 4500 cm3.

2. Based on the condition of the problem, 1 cm3 of lead weighs 15.3 g, which means that the weight of the entire ingot is 4500 * 15.3 = 68850 g = 68.85 kg.

3. So the second student is right, that no one from the class will be able to pick up the ingot, since it is very heavy.