Find the cost of fencing a rectangular field 34 m 20 cm long and 16 m 30 cm wide at Rs. 40 per metre.

Perimeter of the rectangular field is 2(l+b)
i.e. 2 ( 34.2 + 16.3 ) = 2(50.5)
      = 101metres
now cost is 101*40 which is Rs.4040