Find the area of a sector with the given central angle α in a circle of radius r.

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28-05-2018
Mathematics

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Find the area of a sector with the given central angle α in a circle of radius r.

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cylite cylite · Answer 1 · 2018-05-28T18:16:33+02:00

cylite cylite

28-05-2018

area = [(a)(pi•r^2)]/360

1. set up a proportion
a/360 (# of ° in circle) = area of circle/ (pi•r^2)

2. cross multiply
360area of circle = (a•pi•r^2)

3. divide

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