Respuesta :

dtews07

Answer:

The answer is about 1017.88.

Step-by-step explanation:

Knowing that the equation to find the total surface area of a sphere is A=4πr², just plug in 9 as the radius.

A=4πr² ---> A=4π9² ---> A=4π81 ---> A=4(254.469004941) ---> A=1017.87601976