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What is the length of outer boundary of the park shown in figure? What will be the total cost of fencing it at the rate of Rs. 20 per metre ? There is a rectangular flower bed in the center of the park. Find the cost of manuring the flower bed at the rate of Rs. 50 per square metre.

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The length of outer boundary of the park = (200 + 300 + 80 + 300 + 200 + 260) m
= 1340 m

∴ Cost of fencing the park at the rate of Rs. 20 per metre = Rs. (20 × 1340) = Rs. 26800

Area of the flower bed = (100 × 80) m2 = 8000 m2

Now, the cost of manuring the flower bed at the rate of Rs. 50 per square metre

= Rs. (50 × 8000)

= Rs. 400000

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