Can someone help me with this question, I can't get the answer to it.

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

Which equation represents the function on the graph?

25 ! i need asap! ! ill mark brainliest!