Question

The cost of fencing a circular field at the rate of Rs. 24 per metre is Rs. 5280. The field is to be ploughed at the rate of Rs. 0.50 per m2. Find the cost of ploughing the field

Answer 1

Answer:

110

Step-by-step explanation:

5280/24=220

220*0.50=110

Answer 2

Step-by-step explanation:

given that rate of fencing per meter =Rs. 24

given that total cost for fencing circular field=Rs.5280

as we know that circumference of a circle = 2*π*r

2*π*r*24=5280

=>π*r*48=5280

if π =22/7

=>r=5280/150.857 (rounded value)

=>r=35 meters (rounded value)

as we know area of circle is π*r*r

so area=π*r*r=3850 sq.meters

given that cost of ploughing for sq.meter is Rs.0.50

so total cost for ploughing the circular feild is 3850*0.5=Rs.1925

i hope you understood this feel free to text me for any doubts