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1(a) perimeter=4a =4 x 12 =48m
(b) area = a^2 =(12)^2 =144m^2
(c) cost of fencing = 12 x 144 = ₹1728
(d) cost of ploughing = 2.50 x 144 = ₹360
2(a) length = area/breath = 2450/35 = 70m
(b) perimeter = 2(l+b) = 2(70+35) = 210 m
(c) cost of fencing = 25.50 x 2450 = ₹62475
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