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(a) 30m and 25m
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(a) Perimeter=2(l+b)=2(30+25)=2×55=110m
Cost of fencing=₹(25×110)=₹2750Ans.
(b) Perimeter=2(l+b)=2(11+9)=2×20=40m
Cost of fencing=₹(40×25)=₹1000Ans.
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