Question 4
What would be the cost of fencing a rectangular park whose length is 150 m and breadth is 120 m, if the fence costs ₹40 per metre?
We need to find the total length of the fence and then its total cost.
Step 1 — Find the fence length
The fence goes around the park. This length is called the perimeter. The park is a rectangle. Its length is 150 m. Its breadth is 120 m. The perimeter of a rectangle is .
Step 2 — Calculate the total cost
The fence is 540 m long. The cost for each meter is ₹40. We multiply the total length by the cost per meter.
Answer
The cost of fencing the rectangular park is ₹21,600.
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