If the area of a circle measures 9π cm2, what is the circumference of the circle in terms of π?

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

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above