Question

find the circumference of a circle whose area is 6.16cm^2​

Answer 1

Answer:

area of circle=πr^2

6.16cm^2=22/7×r^2

6.16×7/22=r^2

43.12/22=r^2

1.96=r^2

√1.96=r

1.4cm=r

circumference of circle=2πr

=2×22/7×1.4

=44×0.2

=8.8cm