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Q.

The cost of fencing a rectangular field at Rs Question Image per meter is Rs Question Image. If the width of the field is Question Image m. Find its length.

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a

30m

b

31m

c

32m

d

33m 

answer is C.

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Detailed Solution

Concept-
First, we'll calculate the total fence by dividing the total cost of fencing by the cost of fencing a rectangular field. The perimeter of a rectangle formula will then be applied.
It is given that the cost of fencing a rectangular field at Rs 18 per meter is Rs 1980.
It is also given that the width of the field Question ImageNow, the perimeter of the rectangle field Question ImageWe know that Question Image length + width Question ImageTherefore,Question Image length Question ImageQuestion Imagelength Question ImageQuestion Imagelength Question ImageHence, the correct answer is option 3.
 
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