Question

11. The length of an object is 1 m and its breadth
is 0.7 m. If its height is 49 cm but will be the
volume of this object?
12. An empty room measures 6 mx 4 m x 4.5 m If
the density of air is 1.3 kg/m, what is the mass
of air in the room?​

Answer 1

Answer:

11. 0.343 m3 (12.) 140.4 kg