field is 27000 square metres the ratio between its length and breadth is 6 : 5 find the cost of the wire required to go four time round the field at Rs 740 per kilometre of length of the wire
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area of field =27000 sq m
length = 6x
breadth= 5x
6x*5x=27000
30 x^2= 27000
x^2=27000/30=900
x^2=900
x=30
length=6*30= 180m
breadth=5*30=150m
perimeter= 2(180+150)=660m
length of wire fenced with 4 layers= 660*4=2640m=2.640 km
cost of fencing ₹740/m
total cost of wire= 2.640*740=₹1953.60
total wire length=2.64km
cost of wire=₹1953.60
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