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A hall 25 metres long and 15 metres broad is surrounded...

This question belongs to Arithmetic Ability Mensuration 2D
Mensuration 2D
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A hall 25 metres long and 15 metres broad is surrounded by a varandah of uniform width of 3.5 metres. The cost of flooring the varandah, at Rs. 27.50 per square metre is:

Answer & Solution
Correct Answer: Option C
Area of verandah
Area of verandah on outer boundary = 2x($$l$$ + b + 2x)
= 2 × 3.5(25 + 15 + 2 × 3.5) = 329 m2
Cost of flooring = 329 × 27.5 = Rs. 9047.50 (approx.)
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