Q. 235.0( 4 Votes )

A hollow spherical shell is made of a metal of density If its internal and external radii are 8 cm and 9 cm respectively, find the weight of the shell.

Answer :

Given,


Internal radius of sphere (ri) = 8 cm


External radius of sphere (re) = 9 cm


Volume of shell = (external volume – internal volume)


=


Weight of sphere = 909.33 × 4.5 = 4092 gm = 4.092 kg


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