Emath 30.06.2026.

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Last updated 11:04 PM on 6/30/26
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6 Terms

1
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sector area - full circle?

= (π)(r²)

2
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sector area - half-circle?

= ( ½ ) (π) (r²)

= (180/360) (π) (r²)

3
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sector area - quadrant?

= ( ¼ ) (π) (r²)

= (90/360) (π) (r²)

4
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sector area - general formula?

= (θ/360)(π)(r²)

5
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Triangle area formula?

= ( ½ ) (r²) (sinθ)

6
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Area of segment?

= area of sector - area of triangle

= (θ/360) (π) (r²) - ( ½ ) (r²) (sinθ)