A hall with dimensions 25 metres long and 15 metres broad is surrounded by a path of uniform width of 3.5 metres. The cost of flooring the path, at ₹25.50 per square metre is:

₹8389.5

Length of the hall together with the path

= 25 + 2 × 3.5 = 32 m

The breadth of the hall together with the path

= 15 + 2 × 3.5 = 22 m

The area of the path

= (32 × 22 – 25 × 15) = 329 m²

The cost of flooring the path

= 329 × 25.50 = 8389.5