A rectangular hall 18 m X 15 m is surrounded by a verandah 2 m wide. Find the area of the verandah and cost of cementing it at the rate of Rs. 50 per sq.m.
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Answer:
Since, The hall is Surrounded by verandah
So, Additional increase in length will be =2∗2.5=5
Similarly , Additional increase in width will be =2∗2.5=5
So Area of Hall + Verandah =(20+5)(15+5)=25∗20=500
and Area of Hall =20∗15=300
Area of verandah =500−300=200
Rate of 1 sq metre =17.5
Rate of 200 sq metre 17.50∗200=3500
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