Knowing the volume of a piece of iron, how to calculate its weight Reward score: 10 - 14 days and 23 hours to the end of the problem 150cm long 50cm wide Thick 2cm, who told me how heavy it is

Knowing the volume of a piece of iron, how to calculate its weight Reward score: 10 - 14 days and 23 hours to the end of the problem 150cm long 50cm wide Thick 2cm, who told me how heavy it is

150cm*50cm*2cm=15000 cm3
15000 cm3=0.015
7.9*1000kg/m3*0.015m3=118.5kg
7.9 * 1000kg / m3 is the density of iron, it is best to remember
Also, we can see what the reward score is,