Tuesday, March 3, 2015

When finding the area of a sector of a circle take the angle of the sector in degrees and divide by 360. Take the result and multiply by  Pi times r^2.

For example, suppose the radius of a circle is 6 and the angle of the sector is 45 degrees. Therefore the area of the sector is

(45/360)Pi(6)(6) = (1/9)(36)Pi = 14.14

No comments:

Post a Comment