Question

The cost of fencing a rectangular field at ₹ 18 per metre is ₹ 1980. If the width of the field is 23 m, find its length

Answer 1

cost of fencing a rectangular field =₹18 per metre
total cost of fencing =₹1980
length =?
width = 23 m
total fenced = 1980/18 = 110m
perimeter of rectangle = 2(length + breadth)
110 = 2( length + 23)
110/2. = length + 23
55m = length +23
55-23. = length
32 m = length
= length is 32 m

Answer 2

Answer:

Total cost of fencing = Rs 1980

Rate of fencing = Rs 18 per metre

Perimeter of the field = Total costRate=Rs 1980Rs 18/m=(198018) m=110 m

Let the length of the field be x metre.

Perimeter of the field = 2(x + 23) m

∴2(x+23)=110⇒(x+23)=55x=(55−23)=32

Hence, the length of the field is 32 m.

Step-by-step explanation:

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