Find the cost of fencing a square park of side 250 m at the rate of Rs 20 per metre.
Length of fence required = Perimeter of the square park
= 4 × Side
= 4 × 250 = 1000 m
Cost for fencing 1 m of square park = Rs 20
Cost for fencing 1000 m of square park = 1000 × 20
= Rs 20000