Question

The density of iron is 7.8 g/cm3 . An iron beam has a volume of 10,504 cm³.

Answer 1

Answer:

81931.2 gram is the right answer.

Answer 2

The formula to find density is Mass/Volume

We have
Density = $7.8$ $\frac{g}{cm^{3}}$
Volume = $10504 cm^{3}$

Hence
Mass = 7.8×10504 = 81931.2 gram