The cost of putting a fence around a square field at Rs. 18 per metre is Rs. 7200.Find the length of y
each of the sides of the field.
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cost of fencing=area ×rate
let area be a
7200=18a
a=7200/18
a=400m²
area of square=side×side
let side be y
400=y²
y=√400
Y=20m
side of square will be 20m
let area be a
7200=18a
a=7200/18
a=400m²
area of square=side×side
let side be y
400=y²
y=√400
Y=20m
side of square will be 20m
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