The length and breadth of rectangular field are in the ratio 4 ratio 3 if the area of the field is 8112 metersquare find the cost of fencing the field with wire 5 times at Rupees 2.85 per m.
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Let the length of the rectangular is 4x
and the breadth is 3x
Therefore, 4x *3x = 8112
= 12x = 8112
= x = 8112 / 12
= x = 676
length of rectangular is 4 *676 =2704 m
and breadth is 3 * 676 = 2028 m
Now perimeter of rectangular is 2 ( 2704 + 2028 ) = 2*4732 = 9464 m
total cost is 5*9464*2.85 = 1248.62
and the breadth is 3x
Therefore, 4x *3x = 8112
= 12x = 8112
= x = 8112 / 12
= x = 676
length of rectangular is 4 *676 =2704 m
and breadth is 3 * 676 = 2028 m
Now perimeter of rectangular is 2 ( 2704 + 2028 ) = 2*4732 = 9464 m
total cost is 5*9464*2.85 = 1248.62
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