The cost of fencing a rectangular field at Rs18 per metre is Rs1980. If the width of the field is 23m find its length.
The perimeter of the rectangle field =198018=110 m
The width of the field =23 m
We know that
2(length+width)=110
Therefore,
2(length+23)=110
length+23=55
length=32 m
Hence, this is the answer.