Q. 204.2( 6 Votes )

Answer :

Given, the radius of the cylindrical tube, r = 12cm

Level of water raised in tube, h = 6.75cm

Volume of cylinder = πr^{2} h

= π (12)^{2} × 6.75 cm^{3}

----------(i)

let r be the radius of a spherical shell balls

volume of the sphere = -------(ii)

∵ volume of cylinder = volume of spherical ball

⇒ r = 9cm

∴ radius of spherical ball, r = 9cm

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