Length of rectangular park (l) = 175 cm
Breadth of rectangular park (b) = 125 cm
Length of wire required for fencing the park =
Perimeter of the park
= 2 × (l + b)
= 2 × (175 + 125)
= 2 × 300 = 600 m
Cost for fencing 1 m of the park = Rs 12.
Cost for fencing 600 m of the square park = 600 × 12
= Rs. 7200