Answers

2014-03-12T10:19:40+08:00
A= \pi r2
where a is teh area, and r is the radius, or the distance between the center an the border of the circle.
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2014-03-14T20:35:46+08:00
The solution for this is:
 \pi  r^{2}
Whereas, r is the radius(half - diameter), pi is the 3.14 to be used.
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