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| Math Central | Quandaries & Queries |
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Question from grier, a student: please, |
Hi Grier,
If the arc length of half a circle is 3 π, what is the arc length (circumference) of the entire circle?
The circumference of a circle is 2 × π × (the radius) so what is the radius of the circle? What is the formula for the area of a circle? What is the area of this circle?
Penny
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