10. It costs : 5400 to fence a square field at * 13.50 per metre. Find (1) the length of the side of field (ii) the area of the field. Hint: Perimeter = Total cost Cost per metre.
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Answer:
cost = 5400
cost per metre = ₹13.5
perimeter of square = 5400÷ 13.5
= 400
length of 1 side = 400÷4
= 100
area of feild = 100 x 100
= 10000m
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