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10 cards from this deck
Portion of circle formed by 2 radii, like a pie slice
Larger portion of the circle
Smaller portion of the circle
x360°×πr2\frac{x}{360°} \times \pi r^2360°x×πr2
x360°×2πr\frac{x}{360°} \times 2\pi r360°x×2πr
Arc length + 2r2r2r
x360°\frac{x}{360°}360°x (where xxx = angle at centre)
x=Area×360°πr2x = \frac{\text{Area} \times 360°}{\pi r^2}x=πr2Area×360°
x=Arc length×360°2πrx = \frac{\text{Arc length} \times 360°}{2\pi r}x=2πrArc length×360°
πr2\pi r^2πr2
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