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What is the geometric figure of a pencil?
The normal (unsharpened) pencil is a hexagonal cylinder.
What soild figure best names the shape of a round unsharpened pencil?
It is a cylinder when not sharpen
What is the volume of an unsharpened pencil with a lenght of 7 cm and a diameter of .3 cm?
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
What is the driffrent numbers on the side of the pencils for?
The number of the pencil is based on the type of carbon lead used inside. The thicker the carbon lead gets the higher the number of the pencil becomes. If you notice a mechanical pencil is 0.9mm in diameter so it would be called a #0.9 pencil. A #2 pencil's lead is 2mm in diameter. So Why would we call a pencil a #3 pencil? Because it's lead is 3mm in diameter.
What is 6mm in diameter?
An ordinary pencil is one example.
