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Q.

The floor of a rectangular room is 15 m long and 12 m wide. The room is surrounded by a veranda of width 2m on all its sides. The area of veranda is

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a

132

m^{2}

b

120

m^{2}

c

124

m^{2}

d

58

m^{2}

answer is C.

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Detailed Solution

It is given that the floor of a rectangular room is 15 m long and 12 m wide and the room is surrounded by a veranda of width 2m on all its sides.
Since the veranda is 2m wide, the outer length and breadth of the rectangle is 19m and 16m.
The area of a rectangle is given as

length \times breadth

.
Therefore, the area of outer rectangle =19×16

= 304 m^{2}

Area of inner rectangle =15×12

= 180 m^{2}

Therefore, the required area

= (304 - 180) m^{2}

= 124 m^{2}

Hence, the correct option is 3.

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