Question

To fence a cicluar garden, the total cost is rs. 26400 at the cost of rs. 50 per metre. find the radius

Answer 1

cost = Rs. 50 per meter
total cost = Rs. 26400

$perimeter = \frac{26400}{50} =528m$

$2 \pi r=528 \\ \\ r= \frac{528}{2 \pi } \\ \\ r=\frac{528*7}{2*22 }=\boxed {84m}$

Answer 2

Cost of fence=26400@50/m =>Circumference of circle =26400/50=528m Circumference of circle =528m 2πr=528 r=84m