Q. 23 4.8( 4 Votes )

A hollow sphere of internal and external radii 2 cm and 4 cm respectively is melted into a cone of base radius 4 cm. Find the height and slant height of the cone.

Answer :

Volume of hollow sphere before melting = volume of cone

Here, R = 4cm, r = 2cm, r’’ = 4cm, therefore

h’’ = 14cm = height of the cone

Now, slant height, l =

= 14.56 cm

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