A hall 25 metres long and 15 metres broad is surrounded

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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

1. ₹ 9149.50
2. ₹ 8146.50
3. ₹ 9047.50
4. ₹ 4186.50

Correct Option: C

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 = ₹ 9047.5