Question

Find the circumference of a circle whose area is 6.16sq cm.

Answer 1

area = πr^2
6.16=πr^2
r^2=6.16×7/22 =1.96
r=√1.96=1.4

circumference=2πr=2×22/7×1.4=8.8 cm

HOPE THIS WILL HELP YOU

Answer 2

Here is your answer:
now r=0.98

area of circle=pie*r*r
=22/7*0.98*0.98
=3.0184 sq cm

hope it will help