Jul 8, 2017

The mass is $= 6.5 k g$
The volume is $= 200 c {m}^{3}$

#### Explanation:

The volume of the solid cube is

$v = 10 \cdot 10 \cdot 10 = 1000 c {m}^{3}$

Density of iron is $\rho = 6.5 g c {m}^{-} 3$

The mass of the cube is

$m = \rho v = 1000 \cdot 6.5 = 6500 g = 6.5 k g$

-second question

Mass of piece of iron $m = 1.3 k g = 1300 g$

The volume is

$v = \frac{m}{\rho} = \frac{1300}{6.5} = 200 c {m}^{3}$