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Tutorial

A sector is section of a whole circle. Some people like to think of it as a "pizza slice" of the circle.

To find the are of a circle, we have to multiply pi by the radius squared.

To find the area of a sector, we find the area of the whole circle but then we multiply our answer by the fraction of the circle that the sector occupies. So if the sector is 60^{0}, then we know that it is 60^{0} out of the full 360^{0}.

So, the area of the sector is

Source: IMAGES FROM http://www.k6-geometric-shapes.com, and http://calculus-geometry.hubpages.com

"Area Of A Sector" "Sector Area" "Fraction Circles" "How to find the area of a sector”

Source: VIVIDMATHS

Here are some examples for you to try. Answers are provided at the end of each worksheet.

Source: MATHWORKSHEETSLAND.COM