It can be observed that the radius of the conical part and the hemispherical part is same (i.e., 3.5 cm).
Height of hemispherical part = Radius (r) = 3.5 =7/2 cm
Height of conical part (h) = 15.5 −3.5 = 12 cm
Slant height(l) of conical part =
Total surface area of toy = CSA of conical part + CSA of hemispherical part
πrl + 2π r2