The surface area of a baseball is 177cm what is the diameter of the baseball ( use 3.14 for pi )

diameter = 7.5
The formula for surface area of a sphere is
[tex]A=4 \pi r^2[/tex]
plug in the values we know.
[tex]177=4(3.14)r^2[/tex]
Divide both sides by 4(3.14)
14.0923= r^2
take the square root of both sides 
r≈3.75 
multiply by 2 to find the diameter 
diameter = 7.5