A hall 25 metres long and 15 metres broad is surrounded by a verandah of uniform width of 3.5 metres. The cost of flooring the verandah, at 27.50 per square metre is
Answer : Option C
Explanation : Area of the verandah
= (25 + 2 × 3.5) (15 + 2 × 3.5) – 25 × 15
= 32 × 22 – 25 × 15 = 704 – 375
= 329 sq.metre
∴ Cost of flooring = 329 × 27.5 = Rs. 9047.5
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