Final answer:
To find the cost of fencing per meter for a triangular park with given dimensions, calculate the perimeter of the park and divide the total cost of fencing by the perimeter.
Step-by-step explanation:
To find the cost of fencing per meter, we need to first calculate the perimeter of the triangular park. The perimeter of a triangle is the sum of the lengths of its three sides. In this case, the lengths are given as 7m, 8m, and 9m. So, the perimeter is 7m + 8m + 9m = 24m.
Next, we divide the total cost of fencing (Rs 1200) by the perimeter to find the cost per meter. Rs 1200 / 24m = Rs 50 per meter.
Therefore, the cost of fencing per meter is Rs 50.