A hollow spherical shell is made of a metal of density 4.5 g per cm2 .If tits internal and external radii are 8 cm & 9 cm respectively, find the weight of the shell.
let the internal radius of the hollow shell be r = 8 cm
let the external radius of the hollow shell be R = 9 cm
therefore the volume of the spherical shell V =
weight of 1 cubic cm = 4.5 gm
thus the weight of the spherical shell =
hope this helps you
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