Question

The total cost of ploughing a rectangular fields at rupees 2.25 per square metre is rupees 45000. If the breadth of the field is 5 m. Then find the cost of fencing the field at rupees 7.50 per m.

Answer 1

First find the area of field
area of field = 45000/2.25
=20000
therefore, now we can find the length of the field.
Area of field= l*b
20000= l*5
20000/5= l
4000m= l
then find the length of fence of field
length of field= perimeter of field
Perimeter= 2(l+b)
= 2(4000+5)
= 2*4005
=8010 m
Cost of fencing field per m= RS. 7.50
Cost of fencing field at 8010 m= 8010* 7.50
= RS 60075


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