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The volume is the length of the pencil multiplied by the cross sectional area.

Cross Sectional Area = pi * radius2

in this case the radius is half the diameter, which is 0.15cm

So, Cross Sectional Area = pi * (0.15 * 0.15) = 0.0707 cm2

So the total volume is 7cm * 0.0707 cm2

which is 0.4948 cm3

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Q: What is the volume of an unsharpened pencil with a lenght of 7 cm and a diameter of .3 cm?
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