Question

The surface area of a ball is 3,600 square millimeters. What is the balls radius

Answer 1

`A = 4 \pi r^2`


`3600 = 4\pi r^2`


`(3600)/(4 \pi) = r^2`


`r^2 = 286.479`


`r = 16.9`

Answer: The radius is 16.9 mm.