Question

What is the radius for 7 cm, for area and circumference

Answer 1

C=2πr

where:
C=circumference
r=radius

To find the circumference, substitute your known values into the equation:

C=2πr
C=2π(7)
C=14π
C≈43.98 

 the circumference is approximately 43.98 cm. Hope I helped!