Q. 224.2( 9 Votes )

Answer :

Given radius of cone, cylinder & hemisphere (r) = 4/2 = 2 cm

Height of cone (l) = 2 cm

Height of cylinder (h) = 4 cm

Volume of cylinder = h = (4) cm …….. (1)

Volume of cone =

=

= × 4 × 2 cm ………………. (2)

Volume of hemisphere =

=

= …………….. (3)

So remaining volume of cylinder when toy is instead to it

= eq.(1) – eq.(2) + eq.(3)

= π(2)^{2}(4) – ( × π × 8)

= 16π - π (4+8)

= 16π – 8π

= 8π cm^{3}

∴ So remaining volume of cylinder when toy is instead to it = 8π cm^{3}

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