The total surface area of one slice will be 64 π cm².
<h3>What is the total surface area?</h3>
The total surface area includes the base as well as the curving component. It is the whole area covered by the object's surface.
The total area of a form with a curved surface and base is equal to the sum of the two areas.
The total surface area of the sphere will be;

Hence the total surface area of one slice will be 64 π cm².
To learn more about the total surface area refer to the link;
brainly.com/question/8419462