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A lead pencil is in the shape of a cylin...

A lead pencil is in the shape of a cylinder. The pencil is 21 cm long with radius 0.4 cm and its lead is of radius 0.1 cm. What is the volume of wood in the pencil ?

A

`9 cm^3`

B

`9.4 cm^3`

C

`9.9 cm^3`

D

`10.1 cm^3`

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