If the length of a rectangular farm and its breadth are in the ratio 5 : 4 and the area of the farm is 13520 m², find the cost of fencing the farm at the rate of 15 per metre.
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Given :-
Ratio of length and breadth 5:4
Area = 13520 m²
Rate = 15 per m
To Find :-
Cost of fencing
Solution :-
Let the sides be 5x and 4x
Length = 5(26) = 130 m
Breadth = 4(26) = 104 m
Perimeter = 2(130 + 104)
Perimeter = 2(234)
Perimeter = 468 m
Cost = Perimeter x Rate
Cost = 468 x 15
Cost = Rs 7020
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