Question

Ram lakhan has a field in the form of circle. The cost of ploughing the field at the rate of ₹2.24 per m square is ₹45056.find the cost of fencing the field at the rate of₹12.60 per meter

Answer 1

Cost of ploughing per m= rs.2.24

Total cost=rs.45056

so, area of field = 45056/2.24

=20114.28m2

so, cost of 20114.28m2 at the rate of rs.12.60= 20114.28×12.60

=rs.253440

Answer 2

Answer:

Rs.6333.118

Step-by-step explanation:

The cost of ploughing the field at the rate of ₹2.24 per m square is ₹45056.

So, Area of field = $\frac{45056}{2.24}$

                          = $20114.2857143 m^2$

Area of circular field = $\pi r^2$

So,  $\pi r^2=20114.2857143$

$3.14 \times r^2=20114.2857143$

$r=\sqrt{\frac{20114.2857143}{3.14}}$

$r=80.03638$

So, the perimeter of circle = $2 \pi r$

Perimeter of circle = $2 \times 3.14 \times 80.03638$

                               = $502.6284664$

Cost of fencing 1 m = Rs.12.60

Cost of fencing 502.6284664 m = 12.60* 502.6284664 = Rs.6333.118

Hence  the cost of fencing the field at the rate of₹12.60 per meter is Rs.6333.118