Is the area of a room measured in cm2 or m2

m² would be the best unit if you want to measure a room.

Step-by-step explanation:

The unit cm² is too small and would be less exact.

Concept:
First find the volume of both cubes and then take the ratio of lager to smaller cube to the factor of increase.

volume of smaller cube= v= 4³ = 64 in³
volume of larger cube= V= 12³ = 1728 in³

Now find the factor= V/v =1728/64 =27 

So volume increase by the factor of 27