Answer:
54 cm on the blueprint represents actual distance of 27 m. 
Explanation:
Scale on the blue print drawing of a house show 6 cm represents 3 m.
So, the proportion is 
 {Since, 3 m = 300 cm.}
 {Since, 3 m = 300 cm.}
Hence, the original dimensions of the house is reduced in the ratio 
 in the blue print drawing.
 in the blue print drawing.
Then, 27 m i.e. 2700 cm will be represented in the drawing by 
 cm.
 cm.
Therefore, 54 cm on the blueprint represents actual distance of 27 m. (Answer)