Question

find the weight of solid rectangular piece of size 50 cm into 40 cm into 10 cm if 1 cm cube of iron weights 1 gram

Answer 1

The volume of the object = (50*40*10) cm^3

                                          = 20000 cm^3

So, the weight = (1*20000) gram

                         = (20000/1000) kilogram [ 1 kg = 1000 g]

                         = 20 kilogram

(Ans): 20000 g or 20 kg.