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10 cards from this deck
A=πr2A = \pi r^2A=πr2
C=2πrC = 2\pi rC=2πr or C=πDC = \pi DC=πD
Radius is half the diameter
Portion of circle bounded by two radii and an arc
Curved edge of a sector
x360×\frac{x}{360} \times360x× area of full circle
x360×\frac{x}{360} \times360x× circumference of full circle
Region between a chord and arc it cuts off
Sector area minus triangle area
Curved arc and straight edges
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