The length of one arm in a parallel area is 10 meters and the length of a tax is 21. Meters and its area is 168 square meters. How much would it cost to put a fence around it at Rs 12 per meter?
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Answer:
Area =144m
2
Length =16m
Breadth=
16
144
=9m
Perimeter =2(l+b)
=2(16+9)
=2(25)=50m
Cost =6×50=300Rs.
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