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CBSE Class 9 Answered

A toy is in the form of a hemisphere surmounted by a cone of radius 3 cm and height 4 cm. Calculate the surface area of the toy.
Asked by Topperlearning User | 18 Oct, 2017, 14:58: PM
answered-by-expert Expert Answer

Radius of the conical part = Radius of the hemispherical part (r) = 3 cm

Height of conical part (h) = 4 cm, let slant height of the conical part = (l)

For the conical part of toy,

 

Surface area of the toy = Curved surface area of the conical part + curved surface area of the hemispherical part

=

 

Answered by | 18 Oct, 2017, 16:58: PM

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