Answer:
The surface area of the sphere is [tex]529\pi\ ft^{2}[/tex]
Step-by-step explanation:
we know that
The surface area of a sphere is equal to
[tex]SA=4\pi r^{2}[/tex]
we have
[tex]r=23/2=11.5\ ft[/tex] ----> the radius is half the diameter
substitute
[tex]SA=4\pi (11.5)^{2}[/tex]
[tex]SA=529\pi\ ft^{2}[/tex]
