Question

The area of a circle is 3850 cm. Find the circumference of it and also find the cost of wire at $240 per m
to fence it.​

Answer 1

Answer:

area of circle = πr^2

3850 = 22/7 * r ^2

3850*7/22 = r^2

1225 = r^2

√1225 = r

35 = r

now

circumference = 2*22/7*35 = 2*22*5 = 220m

now if

1m = $240

then 220m = 240*220 = $52800

hope you understand plz thank my answer

Answer 2

Answer:

A=2pie× r

3850=22/7×r

3850×7/22=r

175×7=r

1125=r

cost=$240per m

1125/100(convert cm into m)

11.25m

11.25m×$240

$2700m