Q. 394.1( 7 Votes )

What is the length of outer boundary of the park shown in Fig. 6.16? 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.


Answer :

Perimeter = Sum of all sides


Perimeter = 200 + 300 + 80 + 300 + 200 + 260


= 1340 m


Rate of fencing = Rs 20


Total Rate = 20 × 1340


= Rs 26,800


Area of rectangular flower bed = 100 × 80


= 8000 m2


Rate of manuring = Rs 50


So total rate = 50 × 8000


= Rs 4, 00,000


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