A cylindrical pencil of diameter 1.2 cm ...

A cylindrical pencil of diameter `1.2` cm has one of its end sharpened into a conical shape of height `1.4` cm. The volume of the material removed is:

`1.056" cm"^(3)`

`4.224" cm"^(3)`

`10.56" cm"^(3)`

`42.24" cm"^(3)`

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