The surface area of a sphere is 46(pi) cm². what is the radius of the sphere?

Question

This is an algebra 2 question, and I don't know how to approach it. 

Answer 1

              SA = 4Πr²

 

            46Π = 4Πr²

 

Solve this equation for r

 

               46 = 4r²      Divide both sides by Π

 

            46/4 = r²     Divide both sides by 4

 

     √(23/2) = r

Answer 2

Surface of area of any sphere is

 

SA = 4πr²

 

 

Use this hint to finish up here.