The floor of a rectangular room is 21 m long and 12 m wide. The room is surrounded by a veranda of width 2 m on all its sides. The area of the veranda is : Choose the correct choice from the following options.
A) 124 m2	B) 128 m2	C) 138 m2	D) 148 m2	E) None of these
Area of the outer rectangle = 25 Ã— 16 = 400 m2   Area of the inner rectangle = 21 Ã— 12 = 252 m2   Required area = (400 â€“ 252) = 148 m2   Answer 148 m2
<result>D</result>
The floor of a rectangular room is 21 m long and 12 m wide. The room is surrounded by a veranda of width 2 m on all its sides. The area of the veranda is :