A rectangular hall is 12m long and 10m wide. It is surrounded by a verandah 2m wide. Find out the area of the verandah.

Length of hall = 12m
Length of verandah = 12m + 2m = 14m
breadth of hall = 10m
​breadth of verandah = 10m + 2m = 12m
Area of hall = 12 x 10 = 120m2 
Area of verandah = 14 x 12 = 168m- 120m​2 = 28m2 

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Length of hall = 12m
Length of verandah = 12m + 2m = 14m
breadth of hall = 10m
​breadth of verandah = 10m + 2m = 12m
Area of hall = 12 x 10 = 120m2
Area of verandah = 14 x 12 = 164m- 120m​2 = 24m2
 
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Given,l of rectangular hall = 12 m
           b of rectangular hall = 10 m
area = l*b
          12 * 10 m = 120 sq m
area of verandah = 120*2=240
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