Need help with 9 and 10 with shown work plz

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

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

Hi my sisters and brothers can tell me the answer because i don’t understand the question