Question

The of circular plot is 3850 m2.Find the radius Find the fencing the plot at 10 per metre.distance

Answer 1

area of circular plot =3850m²
πr²=3850
22/7*r²=3850
r²=(3850*7)/22
r²=175*7
r²=1225
r=35

circumference of circular plot =2πr
=2*(22/7)*35
=220m
cost of fencing the plot =10*220=Rs.2200

Answer 2

Heya !!

Area of circular plot = 3850 m²

=> π r² = 3850

=> 22/7 × r² = 3850

=> r² = 3850×7 / 22

=> r² = 175 × 7

=> r² = 1225

=> r = √1225

=> r = 35 m

Cost of fencing = Circumference × distance

=> 2πr × 10

=> 2 × 22/7 × 35 × 10

=> 2 × 22 × 5 × 10

=> 44 × 50

=> Rs.2200