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| Math Central | Quandaries & Queries |
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Question from Morgan, a student: find the circumference of a circle with radius 8. |
Morgan,
The circumference of a circle is the perimeter of the circle, the distance around the circle. For and circle the circumference is π times the diameter where π is approximately 3.1416. The diameter is twice the radius so the circumference can be written as 2 × π × r where r is the radius.
Penny
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