Answer: 6π
Step-by-step explanation:
Area of a circle = πr².
To find the circumference, we have to find the radius first
Since the area of the circle in question is 9πcm²
9π = πr²
r² = 9π/π
r² = 9
r = +/-√9
= +/- 3.
To find the circumference now, we substitute for r in the formula above
Circumference = 2πr
= 2 x π x 3
= 6π.
Don't forget the π there must not be define
So the answer = 6π
