assessment:solve me! 1.if the diameter of the sphere in number 1 figure above is 8cm, then its radius r is​

Can someone answer this question? : )

At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?

Can someone me with these two circle theorem questions asap?