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The circumference is _ the area.

The circumference is _ the area.-example-1
User Dviljoen
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Equal to the area. Area of circle is

\pi r^2
This equals to
4 \pi due to 2^2.
Circumference is
2 \pi r
This equals to
2 \pi (2)
When you multiply the 2 and the radius together, they equal to 2^2.
Which results to
4 \pi
User Brionius
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