The real area of dining hall is 27m².
Step-by-step explanation:
Given,
Length of rectangular hall = 6 cm
Width of rectangular hall = 2 cm
According to scale;
2 cm = 3 m
1 cm = 
6 cm = 1.5*6 = 9 m
Therefore,
Real length of hall = 9 m
Real width of hall = 3 m
Area = Length * Width

The real area of dining hall is 27m².
Keywords: area, multiplication
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