Fill in the blank. Quadrupling the radius of a sphere increases the surface
area by a factor of
A. sixteen
B. four
C. eight
D. pi
HELP
![Fill in the blank Quadrupling the radius of a sphere increases the surface area by a factor of A sixteen B four C eight D pi HELP class=](https://us-static.z-dn.net/files/dc2/711c1b852e98d25d02e698116952a23c.png)