Q. 65.0( 2 Votes )

The internal and ext

Answer :

Internal radius of a hollow hemispherical vessel (r1) = 21 cm
External radius of a hollow hemispherical vessel (r2) = 22.75 cm
Capacity of a hollow hemispherical vessel =π r13 = × × 21 × 21 × 21
                                                      = 19404 cm3
                                                      = 19.404 litres
Curved surface area of a hollow hemispherical vessel = 2π r22
                                                                     = 2× (22.75 ) 2
                                                                     = 3253.25 cm3.

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