Question

if the cost of fencing a square plot at the rate of rs.2.50 per metre is rs. 200 then find the length of each side of the field

Answer 1

cost = 200$
cost per metre = 2.50$
perimeter = 200/2.50 = 80m
perimeter = 4a
4a = 80m
a = 20m
thus, side = 20m

Answer 2

Let the length be X cm,
Now,
perimeter = 200/2.50
4x=200/2.50
x=20cm.
length of each side=20cm.
Hope this helps you !!