the length and breadth of a rectangular field are in the ratio 9:5 . if the area of the field is 14580 square metre, find the cost of surrounding the field with a fence at the rate of ₹3.25 per meters.
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l=9x
b=5x
area=l*b
14580=9x*5x
14580=45x^2
√324=x
x=18m
l=9x= 9*18=162m
b=5*18=90m
cost=3.25*(2(162+90))=1638 rs
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