There is no such unit of measurement as a pencil.
stop being lazy and find a ruler.
Which is about 1 centimeter long: a fingernail or a pencil
Depends on the pencil.. But I think it is 40cm.
No, about half that.
with a pencil
A calculator or a pencil etc
A pencil's length is quite a bit more than either; a pencil's diameter is several millimeters, but less than a centimeter (unless you're talking about an oversized novelty pencil, or the kind that they make kindergarten students use).
about half a centimeter
centimetres
sometimes it may be the tip of someones pencil!
centimeter
You would measure it in centimeters.
It is 7.48031496 in, or more practically, 7½ inches.