The following. are the shapes of different flower beds in a garden, If all of them are to be fenced using wire and the cost of wire is rupees 7 per m, find the total cost of wire, Which flower bed requires the longest fence?
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Answer:
Perimeter of Flower bed=4×3.5
=14 m
Each side is to be fenced with 4 rows of rope
Therefore, the length of rope required=4×14
=56m
Cost of 1 metre of rope=Rs. 15
Cost of 56 metre of rope=15×56
=Rs. 840.
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