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What is the cost of erecting a fence round a square field of area 1000000 square meters at the rate of Rs. 10 per meter?

A.	Rs 39000	B.	Rs 40000
C.	Rs 42000	D.	Rs 45000

Answer and Explanation

Answer:Rs 40000

Explanation:
Area of the field = 1000000 sq.m
∴Side of the field = √1000000 = 1000 m
∴Perimeter of the field = 4 * 1000 = 4000 m
∴Cost = 100 * 4000 = Rs 40000

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