Question

Please Help!!!

The surface area of a sphere is 16 square units. The radius of the sphere measures______units.
2
8
4

Answer 1

it is about 1.13 so the closest would be letter A.

Explanation:

`A=4\pi r^(2)` We plug it into this formula

`r=(1)/(2) \sqrt{(A)/(\pi ) } =(1)/(2) *\sqrt{(16)/(\pi ) }` This gives us ≈1.12838