The diameter of a solid metallic right circular cylinder is equal to its height. After cutting out the largest possible solid sphere S from the cylinder, the remaining material is recast to form a solid sphere S1. What is the ratio of the radius of the sphere S to that of sphere S1?
Nelson is brother of Mpho. Lara is sister of Nelson. Eddie is brother of Jessica. Jessica is daughter of Mpho. Mahmood is father of Lara. Who is the uncle of Eddie?