Diameter of pencil=7mm
r(graphite)=12mm=0.2cm
Volume of cylinder=πr2h
=(227×120×120×14)cm3
=(11×110×110)cm3
=0.11cm3
volume of wood =volume of pencil-volume of graphite
=πr2h−0.11cm3
=22/7×(/72×110)(72×110)×14−0.11
=1120×4910−0.11
=5.39−0.11
=5.20cm3