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You can use the circumference of the pencil and the circumference formula to find the radius. Set the measured circumference equal to 2pi*radius and solve.

I measured it to about .75 of an inch, so:

.75=2pi*radius

r=.75/2pi

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Q: What is the radius of a pencil?
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How do draw a circle with a compass?

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Related questions

What is the diameter of a pencil in decimal inches?

It is twice its radius


How could you use a piece of string thumbtack and a pencil to construct a circle with radius AB?

Loop the string around the thumbtack and the pencil so that the distance from the tack to the pencil point is AB units. Fix the thumbtack to where you want the centre of the circle. Using the pencil, and with the string taut, mark its positions. These will lie on a circle with radius AB.


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What steps do you use to find the volume of a pencil?

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