Answer :

As per the question:

The radius of the conical part = 3.5 cm


And,


Radius of the hemispherical part = 3.5 cm


Height of hemispherical part = Radius (r)


= 3.5 cm


= cm


Height of conical part (h) = 15.5 - 3.5 = 12 cm

for cone we know that,
r2 + h2 = l2
where r is the radius of base, l is the slant height and h is the height of cone.

Slant height of the conical part




=


=


Total surface area of toy = CSA of conical part + CSA of hemispherical part


= πrl + 2πr2


= 137.5 + 77


= 214.5 cm2

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