If the radius of a circle is doubled, what happens to its area?

The equation for the area of a circle is  A = πr².

If you double the radius, the area increases exponentially by a factor of two. The area will be squared.

366

step-by-step explanation:

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