The surface area of a sphere is found using the formula 2003-05-05-00-00_files/i0140000.jpg , where r is the radius. if the surface area of a sphere is 642003-05-05-00-00_files/i0140001.j pg square feet, what is the radius, in feet? a. –4 b. 16 c. 4 d. –16

Perhaps the answer is the letter (b). (o)(o)                                                                .                                                              v                                       

Hello! mark me brainliest
answer:
congruent segments
step-by-step explanation:
congruent segments. take a line, cut it in half, superipose one half over the other half; you'll have congruence.