Question

Hey plz help
The area of a circle is 15400m find it's circumference​

Answer 1

area of circle=πr^2

15400=22/7r^2

15400*7/22=r^2

4900=r^2

r=√4900

r=70 m

now,

circumference of the circle=2πr

=2*22/7*70

=44*10

=440m is the answer